Vitamin E can be found in foods including wheat germ, soya, nuts, seeds, olives, and green leafy vegetables such as spinach and asparagus. Scientists have been examining the role vitamin E may play in preventing or treating certain health conditions including cancer and heart disease. But some research has indicated very high amounts of vitamin E can be harmful, raising one's overall risk of death. The UK's Food Standards Agency recommends that men should eat a healthy, balanced diet containing 4mg of vitamin E a day. For women the figure is 3mg a day. Claire Williamson, a nutrition scientist at the British Nutrition Foundation, said further research would be needed to confirm the findings.