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Recent Longevity News for the
seven days ending 8/22/12. You should consult your doctor if you are
taking any medications.
Benefits of male circumcision reconfirmed as rates decline - USA Today,
8/20/12 - "The researchers say that if U.S. rates
dropped to 10% — the level seen in European countries where insurers don't cover
circumcision — the results would include ... 211% more urinary tract infections
in baby boys ... 12% more HIV cases in men ... 29% more human papillomavirus
(HPV) cases in men ... 18% more high-risk HPV infections in women"
Stop grilling dinner: Specific toxic byproduct of heat-processed food leads to
increased body weight and diabetes, mouse study finds - Science Daily,
8/20/12 - "mice with sustained exposure to the compound,
methyl-glyoxal (MG), developed significant abdominal weight gain, early insulin
resistance, and type 2 diabetes. MG is a type of
advanced glycation
endproduct (AGEs), which is produced when food is cooked with dry heat. AGEs
have been found to lower the body's protective mechanisms that control
inflammation ... In the study, one group of mice was fed a diet high in MG over
four generations, while the control group was fed a diet without MG ... Over
four generations, the mice that ate the MG started to develop early insulin
resistance and increased body fat, whereas the control group did not have either
of these conditions. The researchers found that MG caused a marked deficiency in
protective mechanisms, such as the survival factor SIRT1 that is present in fat
and controls inflammation, while enhancing the metabolism of glucose and
insulin. The ingestion of MG also adversely affected the activity of an
important anti-AGE receptor called AGER1, which protects SIRT1 and fights
insulin resistance ... clinical guidelines be revised to eliminate foods cooked
using dry heat and replace them with methods that use lower heat or lots of
moisture (water) as in stewing, poaching or steaming. Examples from the AGE-less
diet include stewed beef, chicken and fish instead of grilled meats"
Vitamin C may lessen harmful effects of air pollution- USA Today, 8/17/12 -
"Results showed that with every increase in course
particulate matter of 10 micrograms per cubic meter (mcg/m3), there was a 35
percent increased risk of hospital admission for people with
asthma or COPD ...
However, the risk of admission was 1.2 times greater among people with low
levels of vitamin C" - See vitamin C at Amazon.com.
Pan-fried meat increases risk of prostate cancer, new study finds - Science
Daily, 8/16/12 - "the risk of
prostate cancer may be a result of potent
chemical carcinogens formed when meats are cooked at high temperatures ...
Researchers examined pooled data from nearly 2,000 men who participated in the
California Collaborative Prostate Cancer Study ... men who ate more than 1.5
servings of pan-fried red meat per week increased
their risk of advanced prostate cancer by 30 percent ... men who ate more than
2.5 servings of red meat cooked at high temperatures were 40 percent more likely
to have advanced prostate cancer ... When considering specific types of red
meats, hamburgers -- but not steak -- were linked to an increased risk of
prostate cancer, especially among Hispanic men. "We speculate that these
findings are a result of different levels of carcinogen accumulation found in
hamburgers, given that they can attain higher internal and external temperatures
faster than steak," ... pan-frying, regardless of meat type, consistently led to
an increased risk of prostate cancer"
Egg Study Not All It’s Cracked Up To Be - ABC News, 8/16/12 -
"This is very poor quality research that should not
influence patient’s dietary choices ... It is extremely important to understand
the differences between ‘association’ and ‘causation’ ... Nissen said the
researchers relied on patients to recall how many eggs
they consumed, but asked them once and assumed it remained constant, which isn’t
reliable. He said the way researchers measured patients’ plaque has come under
“considerable criticism,” and that researchers failed to adjust for other
dietary factors ... Still, the good headline potential was too tempting for
several media outlets to ignore and the story ran widely, and in some cases
without any comment from outside experts ... The danger here is headline writers
who aren’t necessarily science writers may go way overboard in headlining the
story"
Higher BPA Levels, More Heart Disease? - WebMD, 8/15/12 -
"People who have higher levels of the chemical
bisphenol A (BPA) in their urine may be more likely
to have narrowing of their coronary arteries, a new study shows" - Note:
The way they wrote it up in this article doesn't make the argument that clear.
High
potency and synthetic marijuana pose real dangers in first weeks of pregnancy
- Science Daily, 8/15/12 - "Marijuana
is up to 20 times more potent than it was 40 years ago and most
pregnant women who use the drug are totally
unaware that it could harm their unborn child before they even know they are
pregnant ... Given that marijuana is the most widely used illicit drug by
pregnant women worldwide -- one study estimates the rate is as high as 20 per
cent -- this is a major issue ... marijuana exposure during pregnancy has been
associated with anencephaly, a non-sustaining life condition where a large part
of the skull or brain is absent, neurobehavioral deficiencies, such as attention
deficit hyperactivity disorder, learning disabilities and memory impairment in
toddlers and 10 year olds, as well as neuropsychiatric conditions, including
depression, aggression and anxiety, in teens"
Mediterranean diet enriched with olive oil may protect bone - Science Daily,
8/15/12 - "This is the first randomized study which
demonstrates that olive oil preserves bone, at least as inferred by circulating
bone markers, in humans ... Participants were randomly assigned to three
intervention groups: Mediterranean diet with mixed nuts, Mediterranean diet with
virgin olive oil, and a low-fat diet ... Researchers found that only consumption
of the Mediterranean diet with olive oil was associated with a significant
increase in the concentrations of total osteocalcin and other bone formation
markers. There were also no significant changes in serum calcium in subjects
taking olive oil whereas serum calcium decreased significantly in the other two
groups"
Dark
chocolate, cocoa compounds, may reduce blood pressure - Science Daily,
8/14/12 - "The researchers reviewed evidence from
short-term trials in which participants were given dark
chocolate or cocoa powder daily and found that
their blood pressure dropped slightly
compared to a control group ... Cocoa contains compounds called
flavanols, thought to be responsible for the
formation of nitric oxide in the body.
Nitric oxide causes blood vessel walls to relax and open wider, thereby reducing
blood pressure. The link between cocoa and blood pressure stems from the
discovery that the indigenous people of San Blas Island in Central American, who
drink flavanol-rich cocoa drinks every day, have normal blood pressure
regardless of age ... Flavanol-rich chocolate or cocoa powder reduced blood
pressure on average by 2-3 mm Hg" - [Abstract]-
Note: I'm betting that this formula will cover most of those flavanols:
Garden of Life, Radical Fruits Antioxidant Complex at Amazon.com.
Abstracts from this week's
Doctor's Guide Nutrition/Dietetics
plus abstracts from my RSS feeds (Click here
for the journals, the PubMed ones at the top):
Mediterranean diet and CHD: the Greek European Prospective Investigation into
Cancer and Nutrition cohort - Br J Nutr. 2012 Aug;108(4):699-709 -
"In a general population sample of 23 929 adult men and
women with no CVD or cancer at enrolment, a validated FFQ was
interviewer-administered, sociodemographic, physical activity and other
characteristics were recorded, and arterial blood pressure and anthropometric
characteristics were measured. In a median period of 10 years, 636 incident CHD
cases and 240 CHD deaths were recorded. Associations of adherence to the
MD, operationalised through a
nine-component score (0, poor; 9, excellent), with CHD incidence and mortality
were evaluated through Cox regression controlling for potentially confounding
variables. A two-point increase in the MD score was associated with lower CHD
mortality by 25 % (95 % CI 0.57, 0.98) among women and 19 % (95 % CI 0.67, 0.99)
among men. The association of adherence to the MD with CHD incidence was again
inverse, but weaker (hazard ratios 0.85 (95 % CI 0.71, 1.02) among women and
0.98 (95 % CI 0.87, 1.10) among men). With respect to score components, only
meat among men (positively) and fruits and nuts among women (inversely) were
associated with both the incidence of and mortality from CHD"
L-Arginine
enhances glucose and lipid metabolism in rat L6 myotubes via the NO/ c-GMP
pathway - Metabolism. 2012 Aug 10 - "The amino acid
Arginine (Arg) is the main biological
precursor of nitric oxide (NO) and has been described to improve insulin
sensitivity in diabetes and obesity. We investigated the molecular mechanisms
involved in the long-term effects of Arg on glucose and lipid metabolism ... We
provide evidence that Arg improves glucose and lipid metabolism in skeletal
muscle, in parallel with increased phosphorylation of Akt and AMPK-α. These
effects were mediated by the NO/c-GMP pathway. Thus, arginine treatment enhances
signal transduction and has a beneficial effect of metabolism in skeletal muscle
through direct activation of Akt and AMPK pathways" - See
L-arginine products at Amazon.com.
Health Focus (Grains):
Specific Recommendations:
News & Research:
-
White rice increases diabetes risk, scientists say - Fox News, 3/16/12 -
"higher white rice consumption was associated with a
significantly elevated risk of Type 2 diabetes. This association seems to be
stronger for Asians than for Western populations ... compared with brown rice,
white rice has a lower content of many nutrients including fiber, magnesium and
vitamins, some of which -- especially fiber and magnesium -- are thought to
protect against diabetes"
- Note: It doesn't tell you what the percentage of that increased risk is.
-
A
diet rich in slowly digested carbs reduces markers of inflammation in
overweight and obese adults - Science Daily, 1/11/12 -
"Among overweight and obese adults, a diet rich in
slowly digested carbohydrates, such as whole grains, legumes and other
high-fiber foods, significantly reduces markers of inflammation associated
with chronic disease ... a low-glycemic-load diet reduced a biomarker of
inflammation called C-reactive protein by about 22 percent ... C-reactive
protein is associated with an increased risk for many cancers as well as
cardiovascular disease ... a low-glycemic-load diet modestly increased -- by
about 5 percent -- blood levels of a protein hormone called adiponectin ...
a low-glycemic-load diet modestly increased -- by about 5 percent -- blood
levels of a protein hormone called adiponectin. This hormone plays a key
role in protecting against several cancers, including breast cancer, as well
as metabolic disorders such as type-2 diabetes, nonalcoholic fatty liver
disease and hardening of the arteries"
-
Breakfast fail! Worst supermarket cereals revealed - MSNBC, 1/11/12 -
"Eating breakfast pays off—numerous studies indicate
that eating in the A.M. is key in losing and maintaining weight. Not only
have studies shown that regular breakfast eaters have lower BMIs, but they
also typically have lower waist-to-hip ratios than those that skip. Cereal
is a great option—it’s a quick and convenient way to get in on those
belly-shrinking benefits. That said, not all cereals are equal"
-
Three Whole-Grain Portions Daily May Lower Cardiovascular Risk -
Medscape, 1/4/11 - "Daily consumption of 3 portions
of whole-grain foods (WGF) is linked to lower cardiovascular disease (CVD)
risk in healthy, middle-aged people mainly by lowering blood pressure (BP)
... assigned to continue the refined diet (control) or to switch to a
whole-wheat diet or to a whole-wheat plus oat diet, for 12 weeks ...
Compared with the control group, the WGF groups had a significant reduction
in systolic BP (6 mm Hg) and a significant reduction (3 mm Hg) in pulse
pressure ... The observed decrease in systolic blood pressure could decrease
the incidence of coronary artery disease and stroke by ≥ 15% and 25%,
respectively"
-
Eating mostly whole grains, few refined grains linked to lower body fat
- Science Daily, 10/20/10 - "People who consume
several servings of whole grains per day while limiting daily intake of
refined grains appear to have less of a type of fat tissue thought to play a
key role in triggering cardiovascular disease and type 2 diabetes ...
Visceral Adipose Tissue ... VAT volume was approximately 10 % lower in
adults who reported eating three or more daily servings of whole grains and
who limited their intake of refined grains to less than one serving per day
... Visceral fat surrounds the intra-abdominal organs while subcutaneous fat
is found just beneath the skin ... visceral fat is more closely tied to the
development of metabolic syndrome ... participants who consumed, on average,
three daily servings of whole grains but continued to eat many refined
grains did not demonstrate lower VAT volume"
-
Intake
of wholegrain products and risk of colorectal cancers in the Diet, Cancer
and Health cohort study - Br J Cancer. 2010 Aug 24;103(5):730-4 -
"wholegrain (WG) products ... Higher WG product
intake was associated with lower risk of colon cancer and rectal cancer in
men. The adjusted IRR (95% CI) was 0.85 (0.77-0.94) for colon cancer and
0.90 (0.80-1.01) for rectal cancer per daily 50 g increment in intake. For
colon cancer the association was confined to intake of WG bread in
particular. No consistent associations between total or individual WG
product consumption and colon or rectal cancer risk were observed in women"
-
Replacing white rice with brown rice or other whole grains may reduce
diabetes risk - Science Daily, 6/14/10 -
"replacing 50 grams of white rice (just one third of a typical daily
serving) with the same amount of brown rice would lower risk of type 2
diabetes by 16%. The same replacement with other whole grains, such as whole
wheat and barley, was associated with a 36% reduced risk"
-
Whole grain boosts life expectancy of diabetic women: Study - Nutra USA
5/26/10 - "among 7,800 US women followed for 26
years, those with the highest bran intake were 28 percent less likely to die
during the review period than those who consumed the least bran ... Also,
they were 35 percent less likely to die of cardiovascular disease" -
[Abstract]
-
Brown rice and cardiovascular protection -Science Daily, 4/26/10 -
"brown rice might have an advantage over white rice
by offering protection from high blood pressure and atherosclerosis
("hardening of the arteries") ... a component in a layer of tissue
surrounding grains of brown rice may work against angiotensin II.
Angiotensin II is an endocrine protein and a known culprit in the
development of high blood pressure and atherosclerosis"
-
Whole Grains Take a Bite Out of Type 2 Diabetes Risk - US News and World
Report, 3/25/10 - "people who ate five or more
servings per week of white rice were 17 percent more likely to develop type
2 diabetes than those who ate less than one serving of white rice per month
... people who ate two or more servings of brown rice per week were 11
percent less likely to develop type 2 diabetes than those who ate less than
one serving of brown rice per month ... We estimated that replacing 50
grams/day intake of white rice with the same amount of brown rice was
associated with a 16 percent lower risk of type 2 diabetes, whereas the same
replacement with whole grains as a group was associated with a 36 percent
lower diabetes risk"
-
Whole-Grain, Low-Calorie Diet Reduced Body Fat Compared With Refined-Wheat
Low-Calorie Diet - Doctor's Guide, 5/14/09 -
"Patients consuming whole-grain foods had a significantly larger drop in
body fat percentage (assessed by dual-energy x-ray absorptiometry scanning)
compared with patients who had eaten refined foods (-6.8% vs -4.8%; P = .03)
... Total cholesterol and LDL cholesterol levels rose by 5% in the
refined-wheat group but remained unchanged in the wholemeal-wheat group"
-
Calcium And Vitamin D May Not Be The Only Protection Against Bone Loss -
Science Daily, 12/3/08 - "Diets that are high in
protein and cereal grains produce an excess of acid in the body which may
increase calcium excretion and weaken bones ... When fruits and vegetables
are metabolized they add bicarbonate, an alkaline compound, to the body ...
bicarbonate had a favorable effect on bone resorption and calcium excretion
... 171 men and women aged 50 and older were randomized to receive placebo
or doses of either: potassium bicarbonate, sodium bicarbonate, or potassium
chloride for three months. Researchers found that subjects taking
bicarbonate had significant reductions in calcium excretion, signaling a
decrease in bone resorption"
-
Eating Whole Grains Lowers Heart Failure Risk, According To New Study -
Science Daily, 10/27/08 - "whole grain consumption
lowered HF risk, while egg and high-fat dairy consumption raised risk. Other
food groups did not directly affect HF risk"
-
Brown rice bioactives identified by researchers - Science Daily, 9/24/08
-
Rice bran contains high arsenic levels, study - Nutra USA, 8/26/08 -
"rice bran and rice bran solubles contain inorganic
arsenic levels of around 1mg/kg dry weight, which is around 10-20 times the
concentration found in bulk grain ... The tests were conducted on four bran
solubles, one defatted bran, one riceo-ex and three bran products ... Out of
the bran solubles, testing found the highest inorganic arsenic level of
0.86mg/kg in a sample from Holistic Enterprises, Santa Ana, USA. A sample
from NutraCea, USA was found to contain 0.82mg/kg. A sample from Pure Planet
Products, Long Beach, CA, USA, contained 0.71mg/kg and one from Integris,
RiSO Triene, USA, contained 0.61mg/kg ... The rice bran products tested were
from: General Dietary, UK & Eire; The Barry Farm, Ohio, USA; and Tsuno Rice
Fine Chemicals Co, Japan. They contained levels of 0.48, 0.64 and 1.65mg/kg
respectively ... The defatted bran and the riceo-ex products were again
sourced from Japan’s Tsuno Rice, and contained 1.16 and 1.88mg/kg
respectively" - That doesn't help me out much. I've been getting the
Tinkyada brown rice noodles at Henry's.
-
Whole Grains Fight Belly Fat - WebMD, 2/25/08 -
"Both groups experienced a decrease in body fat, but the whole-grain group
lost significantly more body fat from the abdominal region than the
refined-grain group. Excessive fat around the midsection is linked to an
increased risk of heart disease ... The whole-grain group experienced other
benefits. For example, CRP levels dropped by 38% among those who followed a
whole-grain diet"
-
Whole Grain Diets Lower Risk Of Chronic Disease, Study Shows - Science
Daily, 2/5/08 - "Consumption of whole grains has
been associated with a lower body weight and lower blood pressure ... waist
circumference and body weight decreased significantly in both groups --
between 8-11 pounds on average -- but weight loss in the abdominal region
was significantly greater in the whole grain group ... the whole grain group
experienced a 38 percent decrease in C-reactive protein levels ...
Participants in the whole grain group also showed an increased intake of
fiber and magnesium, both of which may prevent or delay the potential onset
of diabetes"
-
Oatmeal's Health Claims Reaffirmed, Study Suggests - Science Daily,
1/8/08 - "studies conducted during the past 15 years
have, without exception, shown: ... total cholesterol levels are lowered
through oat consumption ... low-density lipoprotein (LDL, the "bad"
cholesterol) is reduced without adverse effects on high-density lipoprotein
cholesterol (HDL, the "good" cholesterol), or triglyceride concentrations"
-
More support for whole grains for healthy hearts - Nutra USA< 1/7/08 -
"25 women and 25 men (average age 46, average BMI
35.8 kg per sq. m) were assigned to consume a reduced calorie diet (reduced
by 500 kcal/d) with half of the subjects then randomly assigned to obtain
all of their grain servings from whole grains or to avoid wholegrain foods
for 12 weeks ... CRP levels fell by 38 per cent in the whole-grain"
-
Whole Grains Cut Heart Failure Risk - WebMD, 10/22/07 -
"the risk of heart failure among those who ate
breakfast cereal at least seven times a week was 29% lower than that the
risk among those who never ate cereal, after adjusting for other heart
disease risk factors ... When researchers further analyzed the results they
found this healthy effect was associated with whole-grain cereals only, not
with refined breakfast cereals"
-
Whole Grains vs. High Blood Pressure - WebMD, 8/10/07 -
"Compared to women who reported eating less than
half a daily serving of whole grains, women who claimed to eat at least four
daily servings of whole grains were about 23% less likely to be diagnosed
with high blood pressure during the study"
-
Grain Fiber And Magnesium Intake Associated With Lower Risk For Diabetes
- Science Daily, 5/14/07 - "those who consumed the
most cereal fiber had a 33 percent lower risk of developing diabetes than
those who took in the least, while those who consumed the most magnesium had
a 23 percent lower risk than those who consumed the least. There was no
association between fruit or vegetable fiber and diabetes risk"
-
Health Benefits Of Whole Grains Confirmed - Science Daily, 5/9/07 -
"Consuming an average of 2.5 servings of whole
grains each day is associated with a 21 percent lower risk of cardiovascular
disease compared to consuming only 0.2 servings"
-
Whole-Grain Oats Cut Cholesterol - WebMD, 4/18/07 -
"people who ate whole-grain oatmeal had lower total
cholesterol and LDL cholesterol levels compared with those who ate refined
grain foods. The average reduction in total cholesterol levels was 7.7 mg/dL
and the average reduction in LDL cholesterol levels was 7 mg/dL"
-
Whole Grain Oats May Reduce Risk Factors For Coronary Heart Disease -
Science Daily, 4/17/07
-
Whole-Grain Cereals Cut Heart Failure - WebMD, 3/2/07 -
"were followed for about 18 years, on average ...
Those who reported eating at least seven weekly servings of whole-grain
breakfast cereals were 21% less likely to develop heart failure during the
study, compared with those who ate no whole-grain breakfast cereals"
-
Starch Intake May Increase Risk for Benign Prostatic Hyperplasia -
Medscape, 6/27/06 - "Starch intake was directly
associated with increased risk for BPH with an OR of 1.51 ... The main
sources of starch in the subjects were white bread, pasta, and rice ... An
inverse relationship was observed for polyunsaturated fats (OR, 0.72; 95%
CI, 0.55 - 0.93), linoleic acid (OR, 0.73; 95% CI, 0.56 - 0.94), and
linolenic acid (OR, 0.71"
-
Grains and Pasta (fiber content) - Intelihealth
- Whole
wheat gets an image make-over - MSNBC, 5/10/06
-
Wholegrains better than refined grains to lower bad fats - Nutra USA,
3/22/06 - "After eating the refined-grain diet the
researchers found that serum levels of both triglycerides and apoCIII were
significantly higher than after eating the whole grain diet"
-
The hard truth about stone-ground flour - USA Today, 3/13/06
-
How
Nice, Brown Rice: Study Shows Rice Bran Lowers Blood Pressure In Rats -
Science Daily, 3/3/06 - "adding rice bran to the diets
of hypertensive, stroke-prone rats lowered the animals’ systolic blood pressure
by about 20 percent and, via the same mechanism, inhibited angiotensin-1
converting enzyme, or ACE"
-
Older Adults May Reduce Risk Of Metabolic Syndrome By Eating More Whole
Grains - Science Daily, 2/6/06
-
Older Adults May Reduce Risk of Metabolic Syndrome by Eating More Whole
Grains - Doctor's Guide, 2/6/06 -
"as whole-grain intake increased, fasting blood
sugar levels were lower in these subjects. Refined grain intake, on the
other hand, was associated with higher fasting blood sugar levels ... people
who consumed high amounts of refined grains had twice the risk of having
metabolic syndrome than those people who consumed the fewest servings of
refined grains"
-
Wholegrains ease metabolic syndrome in older people - Nutra USA, 1/12/06
- "Volunteers in the highest wholegrain intake group
(3 servings per day) were statistically half as likely to develop MetS as
those who consumed less than half a serving per day"
-
Heart study strengthens interest in wholegrain products - Nutra USA,
7/28/05 - "Women with a history of heart disease who
participated in a research study and reported having eaten six or more
servings of per week had slower progression of atherosclerosis ...
Insufficient milling breakthroughs had, until last year, prevented bakers
from making a wholegrain bread with a similar taste and texture to white
bread"
- How whole
grains can fight disease - MSNBC, 3/4/05 -
"A greater whole-grain consumption than Americans
currently have is linked in several studies with lower death rates from both
heart disease and cancer ... whole grain consumption can result in 17 to 35
percent fewer deaths from these two diseases"
-
Whole Grains Help Your Heart - WebMD, 12/29/04 -
"Eating just 25 grams of whole grains a day reduces
the risk of heart disease by about 15%"
-
Barley Helps Lower Cholesterol - WebMD, 12/8/04
-
Eat Whole-Grain Carbs, Gain Less Weight - WebMD, 11/17/04 -
"Eating 40 grams of whole grains a day cuts
middle-age weight gain by as much as 3.5 pounds ... Whole grains have three
parts: bran, germ, and the starchy endosperm ... all three parts of whole
grains work together"
-
Research: Refined Grains Expand Girths - Intelihealth, 6/21/04 -
"three years they were tracked ... At the end, the
white bread group had three times the fiber group's gain at the gut ... I
think abdominal fat cells may be more sensitive to insulin's effects than
other fat cells in the body"
-
Eating Whole Grains Pays Off - WebMD, 2/19/04 -
"greater consumption of whole-grain, cereal fiber,
and diets with lower glycemic index were associated with better insulin
sensitivity and were less likely to be affected by insulin resistant or the
metabolic syndrome"
-
Wholegrain intake associated with lower risk of metabolic syndrome -
Nutra USA, 2/18/04 -
"intakes of total dietary fiber, cereal fiber, fruit
fiber, and wholegrains were inversely associated, whereas glycemic index and
glycemic load were positively associated with insulin resistance"
-
Buckwheat May Help Manage Diabetes - WebMD, 11/21/03
-
Buckwheat May Be Beneficial For Managing Diabetes - Intelihealth,
11/18/03 -
"extracts of the seed lowered blood glucose levels
by 12 percent to 19 percent when fed to diabetic rats ... incorporation of
buckwheat into the diet could help provide a safe, easy and inexpensive way
to lower glucose levels and reduce the risk of complications associated with
the disease, including heart, nerve and kidney problems"
-
Higher Whole-Grain Intake Associated With Increased Insulin Sensitivity
- Medscape, 11/7/03 -
"Given that insulin sensitivity is one of the main
predictors of diabetes, our findings support previous reports on the
protective effects of whole grains on the risk of developing diabetes in men
and women by substantiating one of the underlying mechanisms"
-
Whole Grain Cereals Prolong Life - New Hope Natural Media, 6/12/03
-
Searching for ideal diet in sea of conflicting food advice - USA Today,
4/20/03 -
"Dr. Walter Willett, chairman of the nutrition
department at Harvard School of Public Health ... Willett has assembled an
"ideal" diet of his own that relies on healthier plant oils instead of
animal fats, and whole grains and high-fiber
carbohydrates (think brown rice and wheat pasta) over refined grains like
white rice ... It emphasizes plenty of vegetables and fruits, and healthy
protein sources — such as fish, poultry, nuts and legumes — instead of red
meat and high-fat dairy products. Willett also recommends a daily
multivitamin, moderate alcohol consumption and regular physical activity"
-
Whole-Grain Cereal Lengthens Lives - thesandiegochannel.com, 3/28/03 -
"men who ate one serving of whole-grain, high-fiber
cereal every day were nearly 30 percent less likely to die from
heart disease or other
diet-related diseases ... the more whole-grain cereal the men ate, the lower
their risk of death from heart disease ... Whole-grain cereals contain the
kind of fiber that helps lower cholesterol and blood pressure and improves
how the body processes insulin and glucose. Whole grains also have more
vitamins, minerals and antioxidants than refined cereal ... To make sure a
cereal contains whole grains, check the ingredient list. Whole grain or bran
should be listed as the first ingredient ... To be a whole-grain cereal, it
must contain at least 2 grams of fiber per serving, preferably more"
-
Breakfast Reduces Diabetes, Heart Disease - WebMD, 3/6/03 -
"A daily breakfast may reduce the risk of becoming
obese or developing signs that can lead to
diabetes -- called insulin resistance syndrome -- by 35% to 50% compared
with skipping the morning meal ... Their recommendation: A bowl of
whole-grain cereal ... eating whole-grain cereal each day was associated
with a 15% reduction in risk for the insulin resistance syndrome ... soluble
fiber forms a gel-like material that prevents
cholesterol and saturated fats from
entering the bloodstream, where they can collect and form plaques on artery
walls. The insoluble fiber in these cereals, meanwhile, helps keep bowel
movement regular and may help reduce risk of colon problems"
-
Whole-Grain Diet Reduces Diabetes Risk - WebMD, 9/22/03
-
Breakfast Cereal and Heart Disease - WebMD, 2/26/03 -
"the more whole-grain cereal the men ate, the lower
their risk of death from heart disease or any other cause was. For example,
men who ate at least one serving of whole-grain breakfast cereal per day had
a 27% lower risk of death from any cause compared with those who rarely ate
whole-grain cereal ... men who ate the most whole-grain cereals also had a
28% lower risk of death due to heart disease and a 23% lower risk of heart
attack than men who ate the least whole-grain cereal ... whole grains are
thought to help lower cholesterol and blood pressure and improve how the
body processes insulin and glucose. Compared with their highly processed and
refined counterparts, whole-grain cereals also contain more beneficial
micronutrients, antioxidants, minerals, and fiber"
-
Whole Grain Intake Reduces Risk of Type 2 Diabetes in Men - New Hope
Natural Media, 12/26/02 -
"People who consumed the highest amount of whole
grains (3.2 servings per day) had a 30% to 40% reduction in risk of
developing type 2
diabetes compared with those who ate less
than 1 serving a day ... The benefits of whole grains may be due to their
increased content of fiber, which is mostly removed in process of refining
whole grains to white flour. However, some studies suggest that the higher
amount of magnesium in whole grains also contributes to the lower risk of
diabetes"
-
Stuffing Rich in Antioxidants - WebMD, 11/8/02 -
"In the crust, they found eight times more of an
antioxidant called pronyl-lysine than in the crumbs. The original flour
contained none of the compound ... Pronyl-lysine is formed during baking in
both yeast-based and yeast-free bread"
-
Diets High In Whole Grains May Reduce The Risk Of Developing Type 2 Diabetes
In Men - Doctor's Guide, 9/4/02
-
Whole Grains Reduce Long-Term Risk Of Type 2 Diabetes In Men -
Intelihealth, 8/23/02
-
Want to Reduce Your Diabetes Risk? - WebMD, 7/25/02 -
"those who reported eating the most servings of
whole grain foods tended to have lower insulin levels, lower body weights,
and lower cholesterol levels ... The study is just the latest to find that
foods such as slow-cooking oatmeal, popcorn, brown rice, and certain
processed whole grain breads and cereals are protective against type 2
diabetes. Eating whole grain foods has also
been shown to lower the risk of cardiovascular disease ... the wildly
popular weight-loss programs that restrict or eliminate carbohydrates from
the diet are delivering the false message that all
carbohydrates are bad"
- Millet: A
Good Grain? - Dr. Weil, 7/12/02
- Buckwheat
Basics? - Dr. Weil, 6/7/02
-
Diet Rich In Fruits, Vegetables Lowers Risk Of Upper Aerodigestive Tract
Cancers - Doctor's Guide, 5/24/02 -
"Intake of whole grains and
fibre
derived from a diet rich in
fruits and vegetables can reduce the risk of
upper aerodigestive tract (UAT) cancers"
-
Food For Thought: Great Gains From Whole Grains - Intelihealth, 3/27/02
-
Nutrient-Rich Quinoa Makes A Comeback - Natural Foods Merchandiser, 2/03
-
Going Against the Grain, Consumers Have a Lot to Learn About Dietary
Recommendations - WebMD. 3/14/01 -
"the majority also incorrectly believed that 4.3
servings a day was enough. Since 1992, the USDA has recommended 6-11
servings a day, depending on age, gender, and activity level"
-
Whole Grains Cut Ischemic Stroke Risk - Nutrition Science News, 12/00
-
Whole Grains, Fruits, Vegetables May Decrease Stroke Risk - WebMD,
9/26/00
-
Whole Grains Cut Stroke Risk In Women - Intelihealth, 9/26/00
-
You Are What You Eat: New Theories About Rheumatoid Arthritis - WebMD,
4/18/00
Abstracts:
-
Greater
Whole-Grain Intake Is Associated with Lower Risk of Type 2 Diabetes,
Cardiovascular Disease, and Weight Gain - J Nutr. 2012 May 30 -
"identified 45 prospective cohort studies and 21
randomized-controlled trials (RCT) between 1966 and February 2012 ... compared
with never/rare consumers of whole grains, those consuming 48-80 g whole grain/d
(3-5 serving/d) had an ~26% lower risk of T2D [RR = 0.74 (95% CI: 0.69, 0.80)],
~21% lower risk of CVD [RR = 0.79 (95% CI: 0.74, 0.85)], and consistently less
weight gain during 8-13 y (1.27 vs 1.64 kg; P = 0.001). Among RCT, weighted mean
differences in post-intervention circulating concentrations of fasting glucose,
total and LDL-cholesterol comparing whole-grain intervention groups with
controls indicated significantly lower concentrations after whole-grain
interventions [differences in fasting glucose: -0.93 mmol/L (95% CI: -1.65,
-0.21), total cholesterol: -0.83 mmol/L (-1.24, -0.42); and LDL-cholesterol:
-0.72 mmol/L (-1.34, -0.11)]. Findings from this meta-analysis provide evidence
to support beneficial effects of whole-grain intake on vascular disease
prevention"
-
Evaluation
of the usefulness of a low-calorie diet with or without bread in the treatment
of overweight/obesity - Clin Nutr. 2011 Dec 30 -
"The aim of this study was to compare two nutrition strategies (with or without
bread) designed to promote weight loss in overweight/obese women ... 104 women
completed the study (48.4 +/- 9 years, 29.8 +/- 3.5 kg/m(2)). Anthropometric and
biochemical markers improved after the intervention without significant
differences between groups. BREAD group significantly increased total cereal
consumption (3.2 +/- 1.3 to 3.7 +/- 0.5 servings/day, P < 0.05) and the
percentage of energy from carbohydrates (41.2 +/- 6.4 vs. 45.9 +/- 5.0% P <
0.001) and reduced fat (39.0 +/- 6.6 vs. 32.7 +/- 5.1% P < 0.001). In contrast,
NO BREAD group increased the discrepancy with recommended consumption. NO BREAD
group had the most dropouts (21.3% vs. 6.6%, P < 0.05) ... The bread inclusion
in a low-calorie diet designed for weight loss favoured a better evolution of
dietetic parameters and greater compliance with the diet with fewer dropouts"
-
Wholegrain
cereals and bread: a duet of the Mediterranean diet for the prevention of
chronic diseases - Public Health Nutr. 2011 Dec;14(12):2316-22 -
"Several studies show consistently that subjects who
ingest three or more portions of foods per day based on wholegrain cereals have
a 20-30 % lower risk of CVD than subjects who ingest low quantities of cereals.
This level of protection is not observed with the ingestion of refined cereals,
these being even higher than with the intake of fruit and vegetables. Likewise,
high intake of wholegrain cereals and their products, such as whole-wheat bread,
is associated with a 20-30 % reduction in the risk of type 2 diabetes. Finally,
protection against the risk of colorectal cancer and polyps, other cancers of
the digestive tract, cancers related to hormones and pancreatic cancer has been
associated with the regular consumption of wholegrain cereals and derived
products"
-
Breakfast
cereals and risk of hypertension in the Physicians' Health Study I - Clin
Nutr. 2011 Aug 23 - "The average age of study
participants was 52.4 +/- 8.9 years (range 39.7-85.9) during the initial
assessment of cereal intake (1981-1983). During a mean follow up of 16.3 years,
7267 cases of hypertension occurred. The crude incidence rates of hypertension
were 36.7, 34.0, 31.7, and 29.6 cases/1000 person-years for people reporting
breakfast cereal intake of 0, ≤1, 2-6, and ≥7 servings/week, respectively. In a
Cox regression model adjusting for age, smoking, body mass index, alcohol
consumption, fruit and vegetable consumption, physical activity, and history of
diabetes mellitus, hazard ratios (95% CI) for hypertension were 1.0 (reference),
0.93 (0.88-0.99), 0.88 (0.83-0.94), and 0.81 (0.75-0.86) from the lowest to the
highest category of cereal consumption, respectively (p for trend <0.0001). This
association was strongest for whole grain cereals and was observed in lean as
well as overweight or obese participants"
-
A diet rich
in oat bran improves blood lipids and hemostatic factors, and reduces apparent
energy digestibility in young healthy volunteers - Eur J Clin Nutr. 2011 Jun
8 - "Total cholesterol decreased by 14% during the oat
bran period compared with 4% during the control period (P<0.001).
Non-high-density lipoprotein (HDL) cholesterol decreased by 16% in the oat bran
period compared with 3% in the control period (P<0.01), as did total
triacylglycerol (21 vs 10%, P<0.05) and very-low-density lipoprotein
triacylglycerol 33 vs 9%, P<0.01). Plasminogen activator inhibitor-1 (PAI-1) and
factor VII (fVII) levels decreased more during consumption of oat bran compared
with the control period (PAI-1: 30 vs 2.3%, P<0.01; fVII: 15 vs 7.6%, <0.001).
Fecal volume and dry matter were greater when consuming the oat bran diet
compared with the control (P<0.001), and energy excretion was increased by 37%
(1014 vs 638 kJ/day, P<0.001); however, changes in body weight did not differ
(oat bran:-0.3+/-0.5 kg; control: 0.0+/-0.7 kg).Conclusions: Addition of oat
bran (6 g soluble fiber/day) to a low-fiber diet lowered total and non-HDL
cholesterol, as well as hemostatic factors, and may affect energy balance
through reduced energy utilization"
-
Foods and
Food Groups Associated With the Incidence of Colorectal Polyps: The Adventist
Health Study - Nutr Cancer. 2011 May 4:1 -
"Colorectal cancer (CRC) is a leading cause of cancer death in the United
States. The majority of CRC arise in adenomatous polyps and 25-35% of colon
adenoma risk could be avoidable by modifying diet and lifestyle habits ...
Multivariate analysis adjusted by age, sex, body mass index, and education
showed a protective association with higher frequency of consumption of cooked
green vegetables (OR 1 time/d vs. <5/wk = 0.76, 95% CI = 0.59-0.97) and dried
fruit (OR 3+ times/wk vs. <1 time/wk = 0.76, 95%CI = 0.58-0.99). Consumption of
legumes at least 3 times/wk reduced the risk by 33% after adjusting for meat
intake. Consumption of brown rice at least 1 time/wk reduced the risk by 40%.
These associations showed a dose-response effect. High frequency of consumption
of cooked green vegetables, dried fruit, legumes, and brown rice was associated
with a decreased risk of colorectal polyps"
-
Dietary
Fiber Intake and Mortality in the NIH-AARP Diet and Health Study - Arch
Intern Med. 2011 Feb 14 - "During an average of 9 years
of follow-up, we identified 20 126 deaths in men and 11 330 deaths in women.
Dietary fiber intake was associated with a significantly lowered risk of total
death in both men and women (multivariate relative risk comparing the highest
with the lowest quintile, 0.78 [95% CI, 0.73-0.82; P for trend, <.001] in men
and 0.78 [95% CI, 0.73-0.85; P for trend, <.001] in women). Dietary fiber intake
also lowered the risk of death from cardiovascular, infectious, and respiratory
diseases by 24% to 56% in men and by 34% to 59% in women. Inverse association
between dietary fiber intake and cancer death was observed in men but not in
women. Dietary fiber from grains, but not from other sources, was significantly
inversely related to total and cause-specific death in both men and women"
- See brown rice pasta at Amazon.com
(my favorite with turkey meatballs and roasted garlic tomato sauce).
-
Effects of
whole grains on coronary heart disease risk - Curr Atheroscler Rep. 2010
Nov;12(6):368-76 - "Whole grains high in viscous fiber
(oats, barley) decrease serum low-density lipoprotein cholesterol and blood
pressure and improve glucose and insulin responses. Grains high in insoluble
fiber (wheat) moderately lower glucose and blood pressure but also have a
prebiotic effect. Obesity is inversely related to whole grain intake, but
intervention studies with whole grains have not produced weight loss. Visceral
fat, however, may be affected favorably"
-
Rye Whole
Grain and Bran Intake Compared with Refined Wheat Decreases Urinary C-Peptide,
Plasma Insulin, and Prostate Specific Antigen in Men with Prostate Cancer -
J Nutr. 2010 Oct 27 - "Seventeen participants were
provided with 485 g rye whole grain and bran products (RP) or refined wheat
products with added cellulose (WP), corresponding to ~50% of daily energy
intake, in a randomized controlled, crossover design ... We conclude that whole
grain and bran from rye resulted in significantly lower plasma PSA compared with
a cellulose-supplemented refined wheat diet in patients with prostate cancer.
The effect may be related to inhibition of prostate cancer progression caused by
decreased exposure to insulin, as indicated by plasma insulin and urinary
C-peptide excretion"
-
Whole- and
refined-grain intakes are differentially associated with abdominal visceral and
subcutaneous adiposity in healthy adults: the Framingham Heart Study - Am J
Clin Nutr. 2010 Sep 29 - "visceral adipose tissue (VAT)
... Increasing whole-grain intake is associated with lower VAT in adults,
whereas higher intakes of refined grains are associated with higher VAT"
-
Interactions
of dietary whole grain intake with fasting glucose- and insulin-related genetic
loci in individuals of European descent: a meta-analysis of 14 cohort studies
- Diabetes Care. 2010 Aug 6 - "Greater whole grain food
intake was associated with lower fasting glucose and insulin concentrations
independent of demographics, other dietary and lifestyle factors, and BMI (beta
[95% CI] per 1-serving greater whole grain intake: -0.009 mmol/L glucose
[-0.013, -0.005], p <0.0001 and -0.011 pmol/L (ln) insulin [-0.015, -0.007], p
=0.0003) ... Our results support the favorable association of whole grain intake
with fasting glucose and insulin and suggest potential interaction between
variation in GCKR and whole grain intake in influencing fasting insulin
concentrations"
-
Effect of
increased consumption of whole-grain foods on blood pressure and other
cardiovascular risk markers in healthy middle-aged persons: a randomized
controlled trial - Am J Clin Nutr. 2010 Aug 4 -
"randomly allocated volunteers to a control (refined diet), wheat, or wheat +
oats group for 12 w ... Systolic blood pressure and pulse pressure were
significantly reduced by 6 and 3 mm Hg, respectively, in the whole-grain foods
groups compared with the control group ... Daily consumption of 3 portions of
whole-grain foods can significantly reduce cardiovascular disease risk in
middle-aged people mainly through blood pressure-lowering mechanisms. The
observed decrease in systolic blood pressure could decrease the incidence of
coronary artery disease and stroke by ge 15% and 25%, respectively"
-
Whole Grains
Are Associated with Serum Concentrations of High Sensitivity C-Reactive Protein
among Premenopausal Women - J Nutr. 2010 Jul 28 -
"Whole grain intake was inversely associated with hs-CRP concentrations after
adjusting for age, race, BMI, illness, and antiinflammatory drug use. Consumers
of between 0 and 1 serving/d of whole grains had, on average, 11.5% lower hs-CRP
concentrations (P = 0.02) and consumers of >/=1 serving/d had 12.3% lower hs-CRP
concentrations (P = 0.02) compared with nonconsumers"
-
Whole-Grain
Intake and Cereal Fiber Are Associated with Lower Abdominal Adiposity in Older
Adults - J Nutr. 2009 Sep 2 - "After adjustment for
covariates, whole-grain intake was inversely associated with BMI [26.8 kg/m(2)
(25.7-28.1) vs. 25.8 kg/m(2) (24.6-27.1), (95% CI); P-trend = 0.08], percent
body fat [34.5% (32.7-36.3) vs. 32.1% (30.1-34.1); P-trend = 0.02], and percent
trunk fat mass [43.0% (40.4-45.5) vs. 39.4% (36.7-42.1); P-trend = 0.02] in the
lowest compared with the highest quartile category of whole-grain intake.
Refined grain intake was not associated with any measure of body fat
distribution. Cereal fiber was inversely associated with BMI [27.3 kg/m(2)
(26.1-28.6) vs. 25.4 kg/m(2) (24.3-26.7); P-trend = 0.012], percent body fat
[34.7% (32.8-36.6) vs. 31.5% (29.4-33.5); P-trend = 0.004], and percent trunk
fat mass [42.8% (40.2-45.4) vs. 37.8% (35.0-40.6) ... Higher intakes of cereal
fiber, particularly from whole-grain sources, are associated with lower total
percent body fat and percent trunk fat mass in older adults"
-
Whole grains
and incident hypertension in men - Am J Clin Nutr. 2009 Jul 1 -
"whole-grain intake was inversely associated with risk
of hypertension, with a relative risk (RR) of 0.81 (95% CI: 0.75-0.87) in the
highest compared with the lowest quintile (P for trend < 0.0001). In the
multivariate model, total bran was inversely associated with hypertension, with
a relative risk (RR) of 0.85 (95% CI: 0.78, 0.92) in the highest compared with
the lowest quintile"
-
Intake of
plant foods and associated nutrients in prostate cancer risk - Nutr Cancer.
2009;61(2):216-24 - "Plant foods and associated
nutrients may impact prostate cancer (PC) risk and survival ... Reduced PC risk
was associated with the highest tertile of cryptoxanthin (OR = 0.51; 95% CI =
0.35-0.75), fiber (OR = 0.56; 95% CI = 0.35-0.89), vitamin C (OR = 0.60; 95% CI
= 0.41-0.88), and fruits and/or fruit juices (OR = 0.46; 95% CI = 0.31-0.68),
with significant linear trends. Increased risk of PC was associated with the
highest tertile of protein (OR = 1.99; 95% CI = 1.05-3.79) and daily servings of
grains (OR = 1.99; 95% CI = 1.23-3.22) with significant linear trends"
-
The
effects of a whole grain enriched hypocaloric diet on cardiovascular disease
risk factors in men and women with metabolic syndrome - J Clin Nutr. 2008
Jan;87(1):79-90 - "Both hypocaloric diets were effective
means of improving CVD risk factors with moderate weight loss. There were
significantly (P < 0.05) greater decreases in CRP and percentage body fat in the
abdominal region in participants consuming whole grains than in those consuming
refined grains"
-
Whole- and refined-grain intakes and the risk of hypertension in women - Am
J Clin Nutr. 2007 Aug;86(2):472-9 - "Higher whole-grain
intake was associated with a reduced risk of hypertension in middle-aged and
older women"
-
Whole-grain consumption is associated with a reduced risk of noncardiovascular,
noncancer death attributed to inflammatory diseases in the Iowa Women's Health
Study - Am J Clin Nutr. 2007 Jun;85(6):1606-14 -
"The reduction in inflammatory mortality associated with habitual whole-grain
intake was larger than that previously reported for coronary heart disease and
diabetes. Because a variety of phytochemicals are found in whole grains that may
directly or indirectly inhibit oxidative stress, and because oxidative stress is
an inevitable consequence of inflammation, we suggest that oxidative stress
reduction by constituents of whole grain is a likely mechanism for the
protective effect"
-
Whole-grain intake and carotid artery atherosclerosis in a multiethnic cohort:
the Insulin Resistance Atherosclerosis Study - Am J Clin Nutr. 2007
Jun;85(6):1495-502 - "carotid intimal medial thickness
(IMT) ... common carotid artery (CCA) ... Whole-grain intake is inversely
associated with CCA IMT, and this relation is not attributable to individual
risk intermediates, single nutrient constituents, or larger dietary patterns"
-
Blood glucose lowering effects of brown rice in normal and diabetic subjects
- Int J Food Sci Nutr. 2006 May-Jun;57(3-4):151-8 - "The
total sugar released in vitro was 23.7% lower in brown rice than in milled rice.
In healthy volunteers, the glycemic area and glycemic index were, respectively,
19.8% and 12.1% lower (p < 0.05) in brown rice than milled rice, while in
diabetics, the respective values were 35.2% and 35.6% lower. The effect was
partly due to the higher amounts of phytic acid, polyphenols, dietary fiber and
oil in brown compared to milled rice and the difference in some physicochemical
properties of the rice samples such as minimum cooking time and degree of
gelatinisation"
-
Whole-grain foods do not affect insulin sensitivity or markers of lipid
peroxidation and inflammation in healthy, moderately overweight subjects - J
Nutr. 2007 Jun;137(6):1401-7 - "substitution of whole
grains (mainly based on milled wheat) for refined-grain products in the habitual
daily diet of healthy moderately overweight adults for 6-wk did not affect
insulin sensitivity or markers of lipid peroxidation and inflammation"
-
Fiber and Magnesium Intake and Incidence of Type 2 Diabetes: A Prospective Study
and Meta-analysis - Arch Intern Med. 2007 May 14;167(9):956-65 -
"Higher cereal fiber and magnesium intakes may decrease
diabetes risk"
-
Muesli with 4 g oat beta-glucans lowers glucose and insulin responses after a
bread meal in healthy subjects - Eur J Clin Nutr. 2007 Apr 4 -
"Muesli enriched with 4 g of beta-glucans reduces
postprandial glucose and insulin levels to a breakfast based on high glycaemic
index products. A total of 4 g of beta-glucans from oats seems to be a critical
level for a significant decrease in glucose and insulin responses in healthy
people"
-
Whole-grain diets reduce blood pressure in mildly hypercholesterolemic men and
women - J Am Diet Assoc. 2006 Sep;106(9):1445-9 -
"Systolic pressure was lower after the wheat/rice and
half-and-half diets. Diastolic and mean arterial pressures were reduced by all
whole-grain diets"
-
Whole grains, bran, and germ in relation to homocysteine and markers of glycemic
control, lipids, and inflammation 1 - Am J Clin Nutr. 2006 Feb;83(2):275-283
- "Whole-grain intake was inversely associated with
homocysteine and markers of glycemic control ... Inverse associations were also
observed with total cholesterol (P = 0.02), HDL cholesterol (P = 0.05), and LDL
cholesterol ... Whole-grain intake was most strongly inversely associated with
markers of glycemic control in this population"
-
Cereal fiber and whole-grain intake are associated with reduced progression
of coronary-artery atherosclerosis in postmenopausal women with coronary artery
disease - Am Heart J. 2005 Jul;150(1):94-101 -
"Intakes of total, fruit, and vegetable fiber, and
number of servings of refined grain, fruits, or vegetable were not associated
with progression ... Higher intakes of cereal fiber and whole-grain products are
associated with less progression of coronary atherosclerosis in postmenopausal
women with established CAD"
-
Changes in whole-grain, bran, and cereal fiber consumption in relation to
8-y weight gain among men - Am J Clin Nutr. 2004 Nov;80(5):1237-45 -
"an increase in whole-grain intake was inversely
associated with long-term weight gain (P for trend < 0.0001). A
dose-response relation was observed, and for every 40-g/d increment in
whole-grain intake from all foods, weight gain was reduced by 0.49 kg. Bran
that was added to the diet or obtained from fortified-grain foods further
reduced the risk of weight gain (P for trend = 0.01), and, for every 20 g/d
increase in intake, weight gain was reduced by 0.36 kg"
-
Whole-grain intake and insulin sensitivity: the Insulin Resistance
Atherosclerosis Study - Am J Clin Nutr. 2003 Nov;78(5):965-71 -
"Higher intakes of whole grains were associated with
increases in insulin sensitivity"
-
Why whole grains are protective: biological mechanisms - Proc Nutr Soc
2003 Feb;62(1):129-34 -
"First, whole grains are concentrated sources of
dietary fibre, resistant starch and oligosaccharides, carbohydrates that
escape digestion in the small intestine and are fermented in the gut,
producing short-chain fatty acids (SCFA). SCFA lower colonic pH, serve as an
energy source for the colonocytes and may alter blood lipids. These
improvements in the gut environment may provide immune protection beyond the
gut. Second, whole grains are rich in antioxidants, including trace minerals
and phenolic compounds, and these compounds have been linked to disease
prevention. Additionally, whole grains mediate insulin and glucose
responses. Although lower glycaemic load and glycaemic index have been
linked to diabetes and obesity, risk of cancers such as colon and breast
cancer have also been linked to high intake of readily-available
carbohydrate. Finally, whole grains contain many other compounds that may
protect against chronic disease. These compunds include phytate,
phyto-oestrogens such as lignan, plant stanols and sterols, and vitamins and
minerals."
-
Whole grains protect against atherosclerotic cardiovascular disease -
Proc Nutr Soc 2003 Feb;62(1):135-42 -
"Generous intake of whole grains also provides
protection from development of diabetes and obesity. Diets rich in
wholegrain foods tend to decrease serum LDL-cholesterol and triacylglycerol
levels as well as blood pressure while increasing serum HDL-cholesterol
levels. Whole-grain intake may also favourably alter antioxidant status,
serum homocysteine levels, vascular reactivity and the inflammatory state.
Whole-grain components that appear to make major contributions to these
protective effects are: dietary fibre; vitamins; minerals; antioxidants;
phytosterols; other phytochemicals. Three servings of whole grains daily are
recommended to provide these health benefits"
-
Whole-grain and fiber intake and the incidence of type 2 diabetes -
AJCN, 3/1/03 -
"Whole-grain consumption was associated with a
reduced risk of type 2 diabetes. The
relative risk (adjusted for age, sex, geographic area, smoking status, body
mass index, energy intake, and intakes of vegetables, fruit, and berries)
between the highest and lowest quartiles of whole-grain consumption was 0.65
(95% CI: 0.36, 1.18; P for trend = 0.02). Cereal fiber intake was also
associated with a reduced risk of type 2 diabetes. The relative risk between
the extreme quartiles of cereal fiber intake was 0.39"
-
Is intake of breakfast cereals related to total and cause-specific mortality
in men? - AJCN, 3/1/03 -
"Compared with men who rarely or never consumed
whole-grain cereal, men in the highest category of whole-grain cereal intake
( 1 serving/d) had multivariate-estimated relative risks of total and
CVD-specific mortality of 0.83 (95% CI: 0.73, 0.94; P for trend < 0.001) and
0.80"
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