By David Hough, Telegraph.co.uk
American researchers found that a plant extract contained in the skin of red grapes helps protect the body against ageing.
They found the extract, resveratrol, reduced inflammation in humans that led to heart disease and strokes and Type 2 Diabetes.
It has already been shown to prolong life in yeast and animals such as roundworms and fruit flies.
But the researchers at the University of Buffalo, New York, writing in the Journal of Clinical Endocrinology & Metabolism, said they wanted to study its effect on humans.
They concluded that their findings indicated consuming resveratrol could help reduce the development of type 2 diabetes, ageing, heart disease and strokes.