This is a classic low carb book which has been out-of-print for a long time. The PDF is already available on High Steaks – Meat is Life and Just Meat, but I decided to make it available through my website as well. Dr. Donaldson went to medical school in the late 1800s and practiced medicine in New York until the mid-1900s. His book was published in 1961. He had very good success treating his obese patients with an all-meat diet. His general prescription was 6 oz of lean and 2 oz of visible fat three times per day from either lamb or beef. He never recommended pork, chicken, fish, or eggs, but only meat from ruminants. He says that if his patients did not eat enough food, enough times a day, they would invariably stop losing body fat. If you struggle with obesity and cannot seem to lose weight no matter what you do, his approach is definitely worth exploring. I really enjoyed it.