Always a good read, most cancers are environmental, and most of these are caused by obesity, bad diet and smoking/drinking, fix these four things in your life and you reduce your chances of getting cancer by 50%+
What's interesting is how low alcohol ranks compared to obesity and diet. It makes the recent moral panic following loose interpretations of the Lancet study seem hypocritical, if not misguided. If anything deserves a "may cause cancer" sticker, it's nitrate-ridden processed meat.