The problem is incorrectly generalizing personal experiences to a population. You've implied that because there must be a relationship between some people, that

The problem is incorrectly generalizing personal experiences to a population. You've implied that because there must be a relationship between some people, that relationship is the same for all people. You've reduced the complexity of all of human health to a single factor - being human. I think this is a good example of misunderstanding the purpose of both science and medicine.