In the early period of World War II, due to the influence of the world financial crisis, the whole of Europe was lifeless at that time. No matter the lower class or the upper class politicians, everyone always holds a cigarette in his hand to relieve those melancholy days. Hitler, who was already a Nazi leader at that time, did not take smoking seriously. He thinks smoking is very harmful to health. In order to maintain his physical condition, he devoted all his energy to Germany. He always refuses cigarettes offered to him, and he doesn't smoke a cigarette himself.
Secondly, not drinking was Hitler's life style. As a campaign commander at that time, a general who frightened his opponent on the battlefield, it was really unthinkable for Hitler not to drink. He also thinks that drinking will affect his central nervous system, and he can't command this movement well. Moreover, the ability to judge and handle affairs after drinking will be greatly reduced. The purpose of not drinking is to keep a clear head.
The last one is about diet. Hitler not only did not smoke or drink all his life, but also did not eat meat. As an extreme vegetarian, Hitler also refused to eat meat, which may be related to his personal hobbies. Maybe in Hitler's eyes, he has his own saying that he doesn't eat meat. We don't know.