I have heard of people going without food. A man in India has not eaton in 20 years, just drinking water. Another man that I heard on a radio talk show said he did not eat for 18 months, and after about the second month he started having a monthly bowel movement which he claims consisted of black pellets the size of marbles. He said that people who fast would die if they tried this because they believe in food. He claims that he stopped believing in food, but now will eat socially because in America eating is such a social thing. But he says he does not think about eating. He also said that he stopped aging and has not been sick in over 20 years. I guess belief systems are very powerful. There are groups of people that do not eat at all, but they do not believe in food.
I am just passing this along. Do what you will with this info. I guess one could research it.
Personally, I do believe in food. For now anyways... lol