"Only 5 % of cancer is inherited; the rest is caused by acquired factors such as the environment, diet, smoking, drinking, chewing betel nut and so forth," says Whang-Peng.
「癌症只有 5％來自遺傳，其它都是受後天如外在環境、飲食、抽煙、酗酒、吃檳榔等因素影響，」彭汪嘉康說，腫瘤起因於染色體變異，但染色體變異多是後天因素造成的。