The main things you need to know: - "Eat whole food, not too much, (maybe) mostly plants". Do some form of exercise for some time at least 5/7 days. - Listen

The main things you need to know: - "Eat whole food, not too much, (maybe) mostly plants". Do some form of exercise for some time at least 5/7 days. - Listen to your body and do what makes you feel best (e.g. types of foods, meal timing and # of meals per day, types of exercises and amounts). I really believe that people's bodies work differently enough that even excluding extreme cases, no one diet is best for everyone - Genetics, some people are just unlucky or lucky Also for cancer, 99% of things have increase your risk by some amount; including every food, because simply metabolizing causes chemical reactions which (when unlucky) cause cancer. The important things to watch out for are those which carry a very noticeable, substantial increase, like benzene and radiation; studies show that red meat and nitrites correlate with increased risk, but it's ambiguous how significant they are especially with the other correlated factors (like bad eating in general).