Eventually I got hemorrhoids. I now know that adequate nutrition for CRAN must include adequate fiber. Eating many vegetables doesn't necessarily guarantee adequate fiber. The best fiber to prevent hemorrhoids is a mixture of psyllium and wheat bran. This mixture has the added benefit of having been shown to reduce the incidence of colon cancer in experimental animals to a quarter of that seen in controls.
Colon cancer is second only to lung cancer as a cause of cancer death in humans.
The very worst hazards Best experienced in practicing CRAN were toward the end of his 6-month period on fewer than 1,600 calories per day. His weight had dropped below 115 pounds and he was experiencing lightheadedness, physical weakness, periodic cardiac acceleration and gastrointestinal pains. His lightheadedness was so extreme at one point that he fainted-not while driving, luckily. He experienced his first flu in more than two years, and had difficulty shaking it off. He was down to 112 pounds when it was time for his annual physical examination.