Eat a plant-based diet, stay away from all illegal drugs (heroin, crack, meth, coke, etc), don't drink alcohol in excess, don't smoke, maintain a respectable weight level, and do cardio = the best chance for a long life.
Stray away from any of the above, and you obviously increase your chances of a range of physical diseases/disorders.
This is information that cannot be disputed.
So, let it be said.
Thus Spake SF1900