If you got a cancer, how do you do? Prevention is better than cure. But it is always a slogan. Do exercise regularly; eat less oil, less salt, less sugar, do not stay up too late, keep away from smoke , second smoke or wine. My sister said her cancer was caused by pressure of work. But I thought the smoking habit of her husband was the long-term stimulation. He loves my old sister so much, but he does not know his bad habit will kill his family. I can not love a person who has smoking habit. Drinking coffee is also a habit, but it is acceptable. I can not imagine why a smoker smokes to harm himself and his beloved family.