A study published in the January 2008 issue of The American Journal of Clinical Nutrition suggests that persons with a mean age of 58 years with the highest levels of vitamin C had a 42% lower risk of having a stroke than did the study participants with the lowest level of plasma vitamin C.Correlation does not always mean causation, so although data from this study cannot be used to infer a causal relation between intake or plasma concentration of vitamin C and risk of stroke, they can justifiably be used to suggest that low plasma vitamin C concentrations may serve as an excellent biological marker in identifying individuals at high risk of stroke.
It's important to note that data from this study and others suggests that smoking dramatically lowers plasma vitamin C. So, if you are still smoking - give it up!
