Death rates from cancers were not altered by whole grain consumption. Consuming whole grains may reduce the risk of premature death by 15%. The study confirms the recommendations of national dietary guidelines that people consume more whole grains in their diet. The study examined data from the Nurses’ Health Study and the Health Professionals Follow-up study. They factored out the effects of age, body composition, physical activity and overall diet.  The study examined data and death rates over a 25-year period.