I read this years ago, but heard it mentioned on a forum and decided it might be worth rereading. It was written in 1965, but the content still has merit today. Bieler realized that although food is medicine, when people end up in a diseased state, they might need different whole foods to get them well. Sometimes they need just plants, and those need to be alkaline plants such as green beans, zucchini, celery. This would be true especially for the person whose condition is caused by heavy meat eating. Others, in his opinion, need to have raw milk, or next to raw meat. Both of those options are somewhat questionable today. He also believed that for some conditions, you just needed fruits and vegetables and meat, eliminating all grains. This is of course, the basis of fundamental medicine today. Categorizing people according to types, he was able to base some of his recommendations on the needs of that particular type. Very interesting reread.