Posted by Neill Abayon
A natural antioxidant found in red grapes, resveratrol, may not be as beneficial as previously thought. New research in older men suggests that it may counteract the benefits of cardiovascular exercise.
The study comes from researchers at the University of Copenhagen, who suggest that eating an antioxidant-rich diet may hinder the health benefits of exercise, such as lower blood pressure and cholesterol.
The researchers note that since aging is associated with impaired vascular functions due to oxidative strain, resveratrol - which has been shown to decrease vascular disease and improve cardiovascular health - was initially expected to improve cardiovascular health in older men. After all, it has been proven in animal studies to be of benefit in that department.
But in a surprise twist, the researchers found that unlike in our animal counterparts, resveratrol actually impairs the cardiovascular benefits of exercise in older men.
For 8 weeks, the researchers followed 27 men who were around 65 years of age and in good health. During that time, the men all took part in high-intensity exercise, but half of the men received 250 mg of resveratrol each day, while the other half received a placebo pill.
More here.
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