Scientists suggest RDA of Vitamin C should be doubled to Reduce Disease Risk

credit: National Cancer Institute Renee Comet (Photographer) - PD

(Best Syndication News) - The US recommended daily allowance (RDA) of vitamin C should be increased to 200 milligrams per day for adults, scientists from the Linus Pauling Institute at Oregon State University suggests. The current RDA for vitamin C for women is 75 milligrams and 90 milligrams for men. The scientists from the institute put forward that an increase in the RDA could reduce heart disease, stroke, and cancer. The call for the higher intake of vitamin C was published in Critical Reviews in Food Science and Nutrition.

Balz Frei, a professor and director of the Linus Pauling Institute at Oregon State University, said that some clinical trials were essentially imperfect. Of course, the Linus Pauling Institute has long been recommending vitamin C for improving health.

Frei continued to explain that there are many people throughout the world, including the US, that have a vitamin C deficiency.

The argument is that the studies for vitamin C are often a short trial, not over the long term. Benefits of micro-nutrients can take years or even decades to show a reduction in disease risk, Frei explains.

"We believe solid research shows the RDA should be increased," Frei said. "And the benefit-to-risk ratio is very high. A 200 milligram intake of vitamin C on a daily basis poses absolutely no risk, but there is strong evidence it would provide multiple, substantial health benefits."

Symptoms of malaise, fatigue, lethargy can occur even when the vitamin c deficiency is slight explained the researchers. The benefits of healthy levels of vitamin C include a stronger immune system and a reduction in inflammation. The reduced inflammation could reduce atherosclerosis, which could significantly reduce high blood pressure.

There were 29 studies conducted in humans who consumed 500 milligrams of vitamin C supplements daily. There was a sizable reduction in blood pressure numbers, both with systolic and diastolic readings. Hypertension is associated with an increased risk for heart disease, and stroke.

Another study in Europe that consisted of 20,000 men and women found that those with blood plasma levels of vitamin C in the highest 20 percent were at a 60 percent lower risk for death caused from cardiovascular disease compared to those people who were at the lowest 20 percent.

Another study found men who had the lowest levels of vitamin C in the blood were at a 62 percent increased risk of dying from cancer within 12-16 years.

By: Marsha Quinn
Health Reporter



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