A recent AICR (American Institute of Cancer Research) report entitled "Food, Nutrition and the Prevention of Cancer: A Global Perspective" examined over 4,500 studies on the link between diet and breast cancer. The report found that a diet rich in a variety of fruits, vegetables and beans significantly reduces cancer risk.
A variety of plant-based whole foods working together is thought to be more beneficial than the effect of isolated supplements and vitamin pills. According to Ritva Butrum, Ph. D., "The concept of synergy is key. Future cancer-fighting efforts are more likely to revolve around dietary adjustments than one miracle pill."