The x-rated prevention of cancer

Cancer is because of environment, nourishment and food, heredity, virus infection and life style of choice etc. various different factor interactions but cause of.13 cancers can prevent°fro, 13 cancers,such as ability, the diagnosis could cure in early days, 13 cancers can ease pain and sufferings and prolonged life.The prevention of cancer is divided into a class prevention, second class prevention and x-rated prevention.A class prevention is a cancellation or reduces a possible cancer-causing factor and prevent°from the occurrence of cancer.The second class prevention refers to cancer once taking place, how at it the stage discovered it in early days, cure in time.The purpose of one class prevention is the outbreak rate that reduces cancer;The purpose of second class prevention then lowers the death rate of cancer;X-rated prevention namely recovering from illness of diagnosis and treatment empress, raise existence quality and ease pain and sufferings, prolong life.