Nutrition's effect upon body composition changes

T-men and vixens, I would appreciate your thoughts on a paper that I have to write. The topic is “Discuss the effect of nutrition upon body composition changes over the lifespan.” Fortunately this is right up my alley, and I could say quite a lot off the top of my head, although it would all be anecdotal. I’m looking to be pointed towards relevant journal articles/books, or just random thoughts and ramblings. So far I’ve had no trouble finding information relating to nutrition or the life cycle, but have found NOTHING that ties the two topics together. Thanks for any help, in advance =)