This is a fantastic book describing the elaborate scientific research done by the author into the nature of nutrition and degenerative processes. It was written a long time ago and therefore has some odd ways of viewing society, but the technical and social information is extensive. It makes such common sense that a person can be baffeled at the ignorance about good food so prevalent today. This is really the distillation of the wisdom of our ancestors who lived in tune with nature as our wild animal cousins do. Fab.