All important info. But one of the most important roles of fat is in hormone and cholesterol production. Cholesterol is to humans what cellulose is to plants, that is, crucial for building and maintaining structure. Also totally crucial, no fat, no hormones... no life. The word anabolic goes out the window without dietry (including, or importantly saturated) fat. Not such a big deal for a while if you rely on drugs for your anabolic hormone levels. Unfortunately a lot of nutrition and training advice is based on that, and ignores the fact that anabolic drugs were extremely easy to get and legal for anyone from the 1940's until the mid 1970', and still very easy to get and use until the late 1980's, the 50 year period when most contemporary training and nutrition systems were established.
If you want to train drug free, you need to really understand and use fat in your nutrition program, and to think about the reality of the relationship and history of common training systems and drug use. i.e. German Volume Training/Prolific Eastern Bloc Drug Use.
