Tibetans believe it can. Traditional Tibetan medicine emphasizes changes in a diet as an adaptive answer to some symptoms. Obviously, Tibetan medicine is unscie

Tibetans believe it can. Traditional Tibetan medicine emphasizes changes in a diet as an adaptive answer to some symptoms. Obviously, Tibetan medicine is unscientific and based on superstitions rather than biology, and to some extent the method of trial and error with arbitrary interpretation instead of controlled experiments, but the idea that food could be the cause and the answer is general and reasonable. There is absolutely no doubt that a diet is a major factor. Vitamins are the obvious example - processed, overheated foods with destroyed structure of the molecules, which in the long run could lead to deficiencies. Tibetans would use animal blood and organ meat, which could make sense in this context. Humans are not evolved to eat processed foods.