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Recent Longevity News for the seven days ending 12/2/09. You should consult your doctor if you are taking any medications. Continuous Aspirin May Lower Mortality Despite Increased Risk for Recurrent Peptic Ulcer Bleeding - Medscape, 12/1/09 - "Continuous low-dose aspirin therapy may increase the risk for recurrent peptic ulcer bleeding but potentially lowers mortality rates ... Compared with patients who received placebo, patients who received aspirin had lower all-cause mortality rates (1.3% vs 12.9%; difference, 11.6 percentage points; 95% CI, 3.7 - 19.5 percentage points). In addition, patients in the aspirin group had lower mortality rates resulting from cardiovascular, cerebrovascular, or gastrointestinal tract complications vs patients in the placebo group (1.3% vs 10.3%; difference, 9 percentage points; 95% CI, 1.7 - 16.3 percentage points)" Molecular Proof: Exercise Keeps You Young - WebMD, 12/1/09 - "Compared to people who did not exercise, elite runners in the study had cells that looked much younger under a microscope ... Just as the plastic tips on the ends of shoelaces keep the laces from fraying, telomeres protect the chromosomes that carry genes during cell division ... Each time a cell divides, telomeres get shorter. When telomeres get too short, cells can no longer divide and they die ... Researchers now believe telomere shortening is critical to aging, making people more vulnerable to diseases such as heart disease, diabetes, and cancer ... That study suggested exercise might trump genes when it comes to keeping people young" - [U.S. News & World Report] Dutasteride Reduces Risk for Biopsy-Detectable Prostate Cancer in Men at Increased Risk - Doctor's Guide, 12/1/09 - "Compared with placebo, active treatment also showed significantly lower risks for (respectively) HG-PIN (5.4% vs 3.5%; RRR, 34%; P = .0053), ASAP (5.1% vs 3.6%; RRR, 28%; P = .0274), AUR (7.1% vs 1.4%; RRR, 80.4%; P < .0001), BPH-related surgery (5.7% vs 1.4%; RRR 75.6%; P < .0001), and UTI (9.6% vs 5.8%; RRR, 40.8%; P < .0001) ... Similarly, there were significant reductions for mean prostate volume (18.7% increase vs 16.9% decrease; P < .0001) and IPSS (+1.14 vs -0.6; P < .0001), and slightly fewer high-grade tumours (Gleason score, 7-10) in the dutasteride group (7.5% vs 7.0%) ... These benefits were accompanied by significantly more frequent dutasteride-related adverse events (12% vs 19%; P < .0001), with dutasteride treatment showing increased frequencies of decreased libido (2.8% vs 5.5%), impotence (7.7% vs 10.9%), ejaculation disorders (0.5% vs 2.4%), and breast disorders (1.9% vs 3.5%)" - See Dutasteride (Avodart) 30 x 0.5mg capsules at International Antiaging Systems or . Surgeons offering new procedure for acid reflux, GERD - Science Daily, 12/1/09 - "Using the new procedure known as EsophyX TIF (Transoral Incisionless Fundaplication), surgeons can repair or reconstruct the valve between the esophagus and stomach, effectively stopping GERD. BMC is the only hospital in New England offering this new treatment" Cardiovascular Fitness May Sharpen Mind - WebMD, 11/30/09 - "A large new study links cardiovascular fitness in early adulthood to increased intelligence, better performance on cognitive tests, and higher educational achievement later in life ... When researchers looked at twins, they found that environmental factors rather than genetics appeared to play the largest role in these associations. Non-shared environmental influences accounted for 80% or more of differences in academic achievement, whereas genetics accounted for less than 15% of these differences" Too much physical activity may lead to arthritis - Science Daily, 11/30/09 - "Middle-aged men and women who engage in high levels of physical activity may be unknowingly causing damage to their knees and increasing their risk for osteoarthritis" Best Treatment for Erectile Dysfunction? - Dr. Weil, 11/30/09 - "Ginkgo ... Ashwaganda ... Asian ginseng" Hand sanitizer: How it protects you - CNN, 11/27/09 - "up to 80 percent of all infections get spread by hands ... Hand sanitizers are effective against both bacteria and viruses ... The sanitizer works on contact, meaning it's only effective on the parts of your hands that it touches. That means if you miss a spot between your fingers, there could still be viruses or bacteria in that place" - Click here for Purell dispensers. High salt intake directly linked to stroke and cardiovascular disease - Science Daily, 11/24/09 - "analyzed the results of 13 published studies involving over 170,000 people that directly assessed the relationship between levels of habitual salt intake and rates of stroke and cardiovascular disease ... Their analysis shows unequivocally that a difference of 5 g a day in habitual salt intake is associated with a 23% difference in the rate of stroke and a 17% difference in the rate of total cardiovascular disease"
Really? - The
Claim - Vinegar Can Help Lower Blood Sugar Levels - NYTimes.com, 11/23/09 -
"THE BOTTOM LINE Studies suggest that adding
vinegar to a meal may reduce its impact on blood
sugar" - See
apple cider vinegar 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):
Effects of
magnesium on postprandial serum lipid responses in healthy human subjects -
Br J Nutr. 2009 Nov 27:1-4 - "The present study
indicated that Mg supplementation could
inhibit fat absorption and improve postprandial hyperlipidaemia in healthy
subjects" - See
magnesium supplements at Amazon.com
Resveratrol
Prevents the Development of Pathological Cardiac Hypertrophy and Contractile
Dysfunction in the SHR Without Lowering Blood Pressure - Am J Hypertens.
2009 Nov 26 - "Resveratrol
treatment significantly prevented the development of concentric hypertrophy, and
systolic and diastolic dysfunction in SHR without lowering
blood pressure. Resveratrol also
significantly reduced the oxidative stress levels of cardiac tissue in
SHR.ConclusionsResveratrol treatment was beneficial in preventing the
development of concentric hypertrophy and cardiac dysfunction in SHR. The
cardioprotective effect of resveratrol in SHR may be partially mediated by a
reduction in oxidative stress. Thus, resveratrol may have potential in
preventing cardiac impairment in patients with essential hypertension" -
See
resveratrol products at Amazon.com
25-Hydroxyvitamin D, dementia, and cerebrovascular pathology in elders receiving
home services - Neurology. 2009 Nov 25 - "Vitamin
D insufficiency and deficiency was associated with all-cause
dementia,
Alzheimer disease, stroke (with and without dementia symptoms), and MRI
indicators of cerebrovascular disease. These findings suggest a potential
vasculoprotective role of vitamin D" - See
vitamin D at Amazon.com
Resveratrol
Modulates Tumor Cell Proliferation and Protein Translation via SIRT1-Dependent
AMPK Activation - J Agric Food Chem. 2009 Nov 20 -
"Similar to those effects associated with caloric
restriction (CR), resveratrol has
multiple beneficial activities, such as increased life span and delay in the
onset of diseases associated with aging ... Here, we show that resveratrol
activated AMPK in both ER-positive and ER-negative
breast cancer cells ... Here, we show that resveratrol activated AMPK in
both ER-positive and ER-negative breast cancer cells. Once activated, AMPK
inhibited 4E-BP1 signaling and mRNA translation via mammalian target of
rapamycin (mTOR). Moreover, we also found that AMPK activity mediated by
resveratrol in cancer cells was due to inducing the expression of Sirtuin type 1
(SIRT1) via elevation in the cellular NAD(+)/NADH in ER-positive cells. To our
knowledge, we demonstrate here for the first time that resveratrol induces the
expression of SIRT1 protein in human cancer cells. These observations raise the
possibility that SIRT1 functions as a novel upstream regulator for AMPK
signaling and may additionally modulate tumor cell proliferation. Targeting
SIRT1/AMPK signaling by resveratrol may have potential therapeutic implications
for cancer and age-related diseases" - See
resveratrol products at Amazon.com
Indoleamine
2,3-Dioxygenase, an Immunomodulatory Protein, Is Suppressed by
(-)-Epigallocatechin-3-gallate via Blocking of gamma-Interferon-Induced
JAK-PKC-delta-STAT1 Signaling in Human Oral Cancer Cells - J Agric Food
Chem. 2009 Nov 24 - "In this study,
(-)-epigallocatechin-3-gallate (EGCG), the major constituent of
green tea, is found to significantly inhibit
the expression of IDO in human oral
cancer cell lines ... This study indicates that EGCG is a potential drug for
immune and target therapy to enhance cancer therapy
by increasing antitumor immunity" - See
green tea extract at Amazon.com Effects of metformin with or without supplementation with folate on homocysteine levels and vascular endothelium of women with polycystic ovary syndrome - Diabetes Care. 2009 Nov 23 - "Metformin exerts a slight but significant deleterious effect on serum Hcy levels in patients with PCOS, and supplementation with folate is useful to increase the beneficial effect of metformin on the vascular endothelium" Health Focus (Deprenyl/Selegiline): Related Topics:
Where to purchase: News & Research:
Abstracts:
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