Listen up. It's pretty clear that diet plays a major role in disease prevention. However, new research reveals just how important it is to avoid certain foods while consuming large amounts of others in order to avoid early death. These dietary guidelines have been outlined and will be released in a forthcoming issue of the Journal of the American College of Nutrition. The aggressive new food rules put an emphasis on increasing intake of plant foods and caution against alcohol, dairy, and meat consumption. Here's what you need to know.