Sunday, February 24, 2008

Higher plasma vitamin C concentrations predict lower risk of stroke in adults

In a British study of over 20,000 adults, those with the highest plasma vitamin C levels had a significantly lower risk of stroke when compared to adults with lower levels.

To date, clinical trials have not shown significant benefit of vitamin C supplementation in reducing stroke risk, but they have not examined the relation between plasma vitamin C concentrations and stroke risk in a general population.

A recent study published in the American Journal of Clinical Nutrition examined the relation between baseline plasma vitamin C concentrations and risk of incident stroke in a British population of over 20,000 adult men and women. The participants completed a health questionnaire and attended a clinic during 1993"1997. After an average follow-up time of 9.5 years, the participants in the top fourth of plasma vitamin C levels had a 42% lower risk of stroke compared to those with the lowest levels. These results were independent of age, sex, smoking, BMI, blood pressure, cholesterol, physical activity, diabetes, social class, alcohol consumption, and any supplement use.

Plasma vitamin C concentrations, therefore, may act as an indicator of lifestyle or other factors associated with reduced stroke risk and may be helpful in determining those at high risk of stroke.

American Journal of Clinical Nutrition, Vol. 87, No. 1, 64-69, January 2008


Vitamin C is obviously one of the most common vitamins that we think of when we think about vitamins; however, it is important that you are taking a high quality vitamin C supplement that is easily and readily absorbed by the body. While many are quickly expelled from the body before they can be absorbed, USANA's Poly C is formulated with a unique blend of highly bioavailable mineral ascorbates, all of which have potent vitamin C activity, Poly C® maintains higher blood levels of vitamin C than absorbic acid alone. With Poly C®, you'll receive superior vitamin C protection.

* Furnishes an advanced vitamin C supplement based on USANA's proprietary blend of mineral ascorbates
* Provides 600 mg of vitamin C protection in each tablet for enhanced antioxidant protection
* Strengthens the immune system, supports the synthesis of collagen, and promotes cardiovascular health*

You can purchase USANA's Poly C online in the United States, Canada, Australia, Mexico, United Kingdom, New Zealand or Malaysia.

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