An antioxidant nutrient that promotes heart health might have the opposite effect if you get too much. Researchers have found that it can derail the benefits of exercise.
Scientists at the University of Copenhagen found that giving 250 mg of resveratrol daily to men in their 60s kept them from deriving heart benefits from exercise. Resveratrol, a natural antioxidant found in red grapes and wine, has previously been found to boost cardiovascular wellness.“We found that exercise training was highly effective in improving cardiovascular health parameters, but resveratrol supplementation attenuated the positive effects of training on several parameters including blood pressure, plasma lipid concentrations and maximal oxygen uptake,” says researcher Lasse Gliemann.
Ylva Hellsten, the leader of the study, adds: “We were surprised to find that resveratrol supplementation in aged men blunts the positive effects of exercise training on cardiovascular health parameters, in part because our results contradict findings in animal studies. It should be noted that the quantities of resveratrol given in our research study are much higher than what could be obtained by intake of natural foods.”
http://easyhealthoptions.com/alternative-medicine/when-more-of-an-antioxidant-is-too-much/
