Recent Longevity News for the seven days ending 9/26/07. You should consult your doctor if you are taking any medications.
Tocotrienol may protect against DNA damage, says study - Nutra USA, 9/24/07 - "There are eight forms of vitamin E: four tocopherols (alpha, beta, gamma, delta) and four tocotrienols (alpha, beta, gamma, delta). Alpha-tocopherol (alpha-Toc) is the main source found in supplements and in the European diet, while gamma-tocopherol (gamma-Toc) is the most common form in the American diet ... While the majority of research on vitamin E has focused on alpha-Toc, studies into tocotrienols account for less than one per cent of all research into vitamin E ... blood cells from patients receiving the tocotrienol-rich supplement had significantly less DNA damage after three and six months of supplementation than those in the placebo group" - [Abstract] - See my favorite Jarrow FamilE (contains all eight members of the vitamin E family, includes Tocomin) at Amazon.com.
CLA isomers show promise against colon cancer - study - Nutra USA, 9/24/07 - "We have demonstrated that diets containing 0.1 per cent c9,t11 and t10,c12 CLA were equally effective in inhibiting colon cancer cell metastasis in vivo" - [Abstract] - See conjugated linoleic acid at Amazon.com.
Lack Of Sleep Doubles Risk Of Death... But So Can Too Much Sleep - Science Daily, 9/24/07 - "Those who had cut their sleeping from 7h to 5 hours or less faced a 1.7 fold increased risk in mortality from all causes, and twice the increased risk of death from a cardiovascular problem in particular ... those individuals who showed an increase in sleep duration to 8 hours or more a night were more than twice as likely to die as those who had not changed their habit, however, predominantly from non-cardiovascular diseases"
Diet And Medications May Assist Prevention Of Prostate Cancer - Science Daily, 9/24/07 - "dutasteride, has reduced by 50 percent the number of cancerous biopsies among men with benign prostatic hypertrophy ... In one study of selenium, the incidence of prostate cancer was reduced by 49 percent over ten years ... Data already suggests novel uses of statins, commonly prescribed cholesterol-lowering agents, and insulin modulating drugs, such as metformin or the glitazones" - See dutasteride at OffshoreRx.com.
Glucose Benefits of Wine in Diabetics - Medscape, 9/21/07 - "At the end of three months, 91 subjects remained in the study; those in the alcohol-intervention group experienced a statistically significant drop in fasting plasma glucose, from a mean of 139.6 mg/dL to 118 mg/dL"
Omega-3 may boost blood vessel elasticity - study - Nutra USA, 9/21/07 - "fish oil supplementation improved large artery elasticity, compared to placebo (15.51.5 versus 12.83.7 ml.mm.Hg-1 x 10, respectively)" - See Mega Twin EPA at Amazon.com.
Quick-burning Carbs May Cause Fatty Liver: Low-glycemic Diet Protected Mice - Science Daily, 9/21/07 - "After six months, the mice weighed the same. However, mice on the low-glycemic index diet were lean, with normal amounts of fat in throughout their bodies. Mice on the high-glycemic index diet had twice the normal amount of fat in their bodies, blood and livers"
Starchy diet 'may damage liver' - BBC News, 9/21/07 - ""High-glycaemic" foods - rapidly digested by the body - could be causing "fatty liver", increasing the risk of serious illness ... After six months on the diet, the mice weighed the same, but those on the high GI diet had twice the normal amount of fat in their bodies, blood and livers"
Stimulants Help Students With ADHD - WebMD, 9/20/07 - "Kids with attention deficit hyperactivity disorder (ADHD) who take Ritalin or other prescription stimulants are more likely to achieve long-term academic success than children with ADHD who don’t take drugs"
Pomegranate Juice vs. Prostate Cancer? - WebMD, 9/20/07 - "The prostate tumors grew more slowly in the mice that got the pomegranate juice orally or by injection, compared with mice that got the placebo"
Low Vitamin D Linked To Higher Risk Of Hip Fracture - Science Daily, 9/20/07 - "The risk of hip fractures was 77 percent higher among women whose 25 hydroxyvitamin D levels were at the lowest concentrations ... most experts think that people need at least 800 to 1,000 international units a day" - See vitamin D at Amazon.com.
Cervical Cancer Vaccine Exceeds Expectations - WebMD, 9/19/07 - "Gardasil came on the market last year for preventing infection with two strains of human papillomavirus (HPV), 16 and 18, that are responsible for up to 70% of all cervical cancers, and HPV 6 and 11, which account for 90% of genital warts"
Male Breast Enlargement May Be Common - WebMD, 9/19/07 - "Underlying the condition is an imbalance of estrogen and testosterone. When estrogen levels get too high, the breasts can begin to grow" - See my aromatization page for ways to prevent it. I take a quarter tablet of letrozole per day (OffshoreRX.com) to prevent it.
Cell Phones May Cause Hearing Loss - WebMD, 9/19/07 - "One- to two-year users had a 16.48 decibel loss in the high-frequency range, he says, while those who used the phones more than four years had a 24.54 decibel loss ... That decrease in hearing over a relatively brief period may not be noticeable to mobile phone users but would be of concern to a hearing expert"
Alcohol and Cardiovascular Health - Medscape, 9/10/07 - "The cumulative scientific evidence demonstrates concordant J-shaped associations between alcohol intake and a variety of adverse health outcomes. These data suggest that alcohol consumption, like exercise, is most cardioprotective when done daily and in moderation. It is tempting, based on the current wealth of evidence, to recommend small daily doses of alcohol (e.g., 1 drink per day) to nondrinkers with or at high risk for CV disease. Guidelines for sensible drinking developed in the United Kingdom state, "Middle-aged or elderly men and postmenopausal women who drink infrequently or not at all may wish to consider the possibility that light drinking may benefit their health". We occasionally make this recommendation to patients well known to us who have no personal or family history of substance abuse, have no history of depression or bipolar disorder, and are nonsmokers. However, light to moderate drinking cannot be universally recommended to the general public or even patients with CV disease"
Abstracts from this week's Doctor's Guide Nutrition/Dietetics plus abstracts from my RSS feeds:
Is the metabolic syndrome a risk factor for female sexual dysfunction in sexually active women? - Int J Impot Res. 2007 Sep 20 - "In premenopausal women, the MS was an independent risk factor for impaired sexual desire (P=0.03) with an age-adjusted odds ratio of 3.3 (95% confidence interval: 1.5-7.3). In premenopausal female sexual life, the MS represents an independent role via its correlation to impaired desire"
Higher serum free testosterone is associated with better cognitive function in older men, while total testosterone is not. The Health In Men Study - Clin Endocrinol (Oxf). 2007 Sep 20 - "In community-dwelling older men, serum free testosterone >/= 210 pmol/l is associated with better cognitive performance"
Prevalence of and risk factors for vitamin B(12) deficiency in patients with Crohn's disease - Inflamm Bowel Dis. 2007 Sep 20 - "Vitamin B(12) abnormalities are common in patients with CD and patients with a prior ileal or ileocolonic resection are at particular risk" - See iHerb or Vitacost Vitamin B12 products.
Reduction of DNA damage in older healthy adults by Tri E((R)) Tocotrienol supplementation - Nutrition. 2007 Sep 19 - "Tri E((R)) Tocotrienol supplementation may be beneficial by reducing DNA damage as indicated by a reduction in DNA damage, SCE frequency, and urinary 8-OHdG" - See my favorite Jarrow FamilE (contains all eight members of the vitamin E family, includes Tocomin) at Amazon.com.
Influence of conjugated linoleic acid isomers on the metastasis of colon cancer cells in vitro and in vivo - J Nutr Biochem. 2007 Oct;18(10):650-7 - "diets containing 0.1% c9,t11 and t10,c12 CLA were equally effective in inhibiting colon cancer cell metastasis in vivo. However, in vitro, only c9,t11 but not t10,c12 inhibited colon cancer cell migration and MMP-9 activity" - See conjugated linoleic acid at Amazon.com.
Pioglitazone Exerts Protective Effects Against Stroke in Stroke-Prone Spontaneously Hypertensive Rats, Independently of Blood Pressure - Stroke. 2007 Sep 20 - "Our work provides the first evidence that pioglitazone significantly protects against hypertension-induced cerebrovascular injury and stroke by improving vascular endothelial dysfunction, inhibiting brain inflammation, and reducing oxidative stress. These beneficial effects of pioglitazone were independent of blood pressure or blood sugar values. Thus, pioglitazone appears to be a potential therapeutic agent for stroke in type 2 diabetes with hypertension"
Alpha-tocopherol supplementation prevents the exercise-induced reduction of serum paraoxonase 1/arylesterase activities in healthy individuals - Eur J Clin Nutr. 2007 Sep 19 - "Alpha-T supplementation may result in protection of the enzyme PON 1/Aryl activities from free radical production"
Comparative effects of quercetin and its predominant human metabolites on adhesion molecule expression in activated human vascular endothelial cells - Atherosclerosis. 2007 Sep 17 - "both quercetin and its metabolites, at physiological concentrations, can inhibit the expression of key molecules involved in monocyte recruitment during the early stages of atherosclerosis" - See quercetin at Amazon.com.
A randomised placebo-controlled interventional trial of omega-3-polyunsaturated fatty acids on endothelial function and disease activity in systemic lupus erythematosus - Ann Rheum Dis. 2007 Sep 17 - "Low dose dietary supplementation with omega-3 fish oils in SLE not only has a therapeutic effect on disease activity but also improves endothelial function and reduces oxidative stress and may therefore confer cardiovascular benefits"
Beyond lipids: the role of omega-3 Fatty acids from fish oil in the prevention of coronary heart disease - Curr Atheroscler Rep. 2007 Aug;9(2):145-53 - "Results of the recent JELIS trial in a Japanese population already consuming a high intake of omega-3 fatty acids showed a 19% risk reduction in major coronary events" - See Mega Twin EPA at Amazon.com.
Risk of new-onset diabetes mellitus and worsening glycaemic variables for established diabetes in men undergoing androgen-deprivation therapy for prostate cancer - BJU Int. 2007 Sep 14 - "new-onset diabetes mellitus (NODM) ... Receipt of vitamin D had a protective effect (odds ratio 5.75 ... Patients receiving ADT for prostate cancer with or with no history of DM should have routine surveillance of glycaemic control, particularly when their BMI is >/= 30 kg/m(2), with appropriate preventive and treatment measures"
Efficacy of prolonged release melatonin in insomnia patients aged 55-80 years: quality of sleep and next-day alertness outcomes - Curr Med Res Opin. 2007 Sep 14 - "PR-melatonin results in significant and clinically meaningful improvements in sleep quality, morning alertness, sleep onset latency and quality of life in primary insomnia patients aged 55 years and over" - See melatonin at Amazon.com.
EPA and DHA in blood cell membranes from acute coronary syndrome patients and controls - Atherosclerosis. 2007 Sep 15 - "acute coronary syndromes (ACS) ... Compared with the lowest EPA+DHA group, the odds ratio for an ACS event was 0.58 (95% CI 0.42-0.80), in the intermediate EPA+DHA group and was 0.31 (95% CI 0.14-0.67; p for trend <0.0001) in the highest EPA+DHA group ... Odds for ACS case status increased incrementally as the EPA+DHA content decreased suggesting that low EPA+DHA may be associated with increased risk for ACS"
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