I do eat a healthy diet with lots of fruits, vegetables, eggs, lean meat, fat free yogurt, skim milk, soy protein, and fish.
Read some articles about conjugated linoleic acid (CLA). This important nutrient is found in the butterfat of milk. There are also CLA supplements but some research has indicated that these supplements might have a negative effect on the body's insulin resistance. The Lynnette Harris article, CLA: The Modern Food Chain's Weak Link
is pretty good.
Reading those books by Adelle Davis really dates us. When I was a young bodybuilder I remember going into the Glendale Public Library and taking out her books. Her ideas on nutrition made a lot of sense to me. In fact her ideas made more sense to me than the taking of anabolic steroids. Many guys that I worked out with were taking the steroids and bulking up to massive porportions. I never liked that look though. I don't think 18-inch arms and a 19-inch neck look attractive. The guys I knew who were on the anabolic steroid kick all became messed-up physically years later - bald and fat.
A while after the Adelle Davis enthusiasm there was the Life Extension craze. I read the thick book (1982) by Durk Pearson and Sandy Shaw but was turned off by its enthusiasm for the heavy pill regimen. Two of my friends in Chicago were taking hundreds of expensive vitamin pills each week. I then had the belief that taking megadoses of individual synthetic nutrients was not a good idea. I still basically believe this.
You might find some value in a book that I recently read by Mark Sisson. The Primal Blueprint
is a 325-page explanation and expansion of the paleolithic diet. There is a lot of repetition and a lot of stuff about Grok and Korg, two comic book characters, that turned me off, but Mark Sisson is essentially a good writer who makes some valid points. I wish I were his editor. I would have cut the book down to 150 pages and taken out all the promotional material for his pricey line of vitamins. His website is Mark's Daily Apple
Of course Mark is not the only one pushing his proprietary vitimins. Joseph Mercola, Jon Barron, and Andrew Weil, and others do the same thing. (Andrew Weil not so much though) I guess once the money starts flowing in, all of one's previous idealism and integrity are weakened. Of course we still have all of our idealism and integrity.