Am I a hypochondriac or am I just crazy?

You are not crazy or a hypochondriac you are just dwelling too much on the negative things. Yes all those can be bad for health salt, grease etc. But you let it overwork your mind. Try and not do that you may want to see a Dr. there is medication for these disorders but a lot of it comes from you seeing your dad think he is going to die of everything. As for the hair growth that is weird. Start with Dr. to make sure no medical issues are present then if not go to a Physc Dr.and you may find the answer there