What causes Cancer

What causes Cancer? A lot of people died of cancer. But the cure still remains mysterious. There are many different types of cancer. What really causes cancer? Well, according to studies, there are many factors that great contribute to cancer. Let's start with carcinogens. What are carcinogens? Carcinogens are substances, chemicals or radiation that cause cancer after a long exposure like for an obvious example, tobacco, metal fumes, asbestos, and the like. Next is genetic. Some people inherited genetic mutations within cells that become cancerous. But with proper diet, which )includes fruits and vegetables), cleanliness and exercise. We can avoid developing cancer cells.