· Foods contain chemicals that help repair DNA
· Study backs link between diet and disease

Researchers at Georgetown University in Washington DC believe the answer lies with two naturally occurring compounds. The first, indole-3-carbinol or I3C is abundant in vegetables including broccoli and cabbage, while the second, genistein, occurs naturally in soya beans.

http://www.guardian.co.uk/science/story/0,,1704980,00.html?gusrc=rss