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Raising Vitamin C RDA May Reduce Aging-Related Diseases

Posted Aug 11 2012 10:09pm
Posted on Aug. 10, 2012, 6 a.m. in Vitamins Cancer Cardio-Vascular Dietary Supplementation Stroke
Raising Vitamin C RDA May Reduce Aging-Related Diseases

The recommended dietary allowance (RDA) of vitamin C has traditionally been based on the prevention of the vitamin C deficiency disease, scurvy. A number of previously published studies have suggested that higher intakes of vitamin C may exert additional health benefits. Balz Frei, from Oregon State University (Oregon, USA), and colleagues urge that compelling evidence exists the RDA of vitamin C should be raised to 200 milligrams per day for adults, up from its current levels in the United States of 75 milligrams for women and 90 for men. The researchers submit that it is appropriate to seek optimum levels that will saturate cells and tissues, pose no risk, and may have significant effects on public health at almost no expense – about a penny a day if taken as a dietary supplement.  Writing that: "vitamin C acts as a biological antioxidant that can lower elevated levels of oxidative stress, which also may contribute to chronic disease prevention,” the study authors submit that: "[an] optimum dietary intake of vitamin C [yields]  potential health benefits with the least risk of inadequacy or adverse health effects.”

Balz Frei, Ines Birlouez-Aragon, Jens Lykkesfeldt.  “Authors' Perspective: What is the Optimum Intake of Vitamin C in Humans?”  Critical Reviews in Food Science and Nutrition, Volume 52, Issue 9, September 2012, pages 815-829.

  
Researchers submit that by raising the Vitamin C recommended dietary allowance (RDA), cases of heart disease, stroke, and cancer might be slashed.
Obesity leads to more doctor visits than smoking, a statistic that underscores the gravity of the problem of excess pounds.
Consuming juice from wild blueberries helps to protect DNA from damage, thereby potentially decreasing a person's risk of cardiovascular disease.
Among families with a genetic risk of Alzheimer’s Disease, early signs presaging the condition’s onset appear in blood and cerebrospinal fluid.
Consumption of chia seeds raises blood levels of alpha-linolenic acid (ALA) and eicosapentaenoic acid (EPA), among postmenopausal women.
South Korea researchers report that onion helps to protect the brain from stroke-related vascular damage, in a lab animal model.
Phobic anxiety associates with shorter telomeres – a marker of a cellular aging, in middle-aged and older women.
Extracts from green tea and grape seed inhibits the action of certain start-digesting enzymes, thereby offering plant-based options to control blood sugar.
Nationwide (US) life expectancy would potentially be 2 years higher if adults reduced their time spent sitting to less than 3 hours a day.
University of Pennsylvania (US) researchers use sugar and a 3-D printer to replicate a vascular template.
Higher doses of Vitamin D may be the most beneficial approach to reduce bone fractures among older adults.
Low levels of vitamin B-6 and B-12 are associated with an increased risk of impaired cognition.
Low pyridoxal-5-phosphate, a marker of vitamin B-6, is associated with increased levels of inflammatory markers.
Daily supplements of vitamin C may decrease heart rate during exercise, thereby reducing the perception of fatigue and exertion.
Large-scale study reports that dietary supplementation of vitamin D plus calcium reduces mortality in the older population.
Daily supplementation of folic acid may reduce hardening of the arteries and counter atherosclerosis.
One in ten people could see their blood pressure fall to within target values simply by increasing their intake of vitamin B2.
Insufficient levels of Vitamin D make the body’s innate immune defenses susceptible to viral infections.
People with higher intakes of Vitamin D may be at a lower risk of developing Alzheimer's Disease.
Gamma and delta-tocopherols, the forms of Vitamin E in vegetable oils and nuts, help to prevent cancer formation and growth, in animal models.
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23. Lower Pressure with Potatoes
Potatoes are among the foods richest in potassium, a mineral that fights high blood pressure. One baked potato with skin contains 903 mg of potassium, nearly one-third of the recommended Daily Value. And, in 2005 researchers from the Institute of Food Research (United Kingdom) found that the potato contains natural compounds known as kukoamines, that in an herbal remedy (Lycium chinense) are associated with blood-pressure reducing properties.
 
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