A Keats Good Health Guide published regularly to give you the newest and best available information on health topics of major importance, written by leading physicians and other health practitioners, researchers and expert reporters. The 40/30/30 diet provides a balance of complex carbohydrates, protein and fat devised to make the best use of your hormonal responses to different foods. Tested for years, this approach has demonstrated its value in restoring health, and can be adjusted to fit your own biochemical makeup, including blood type.