My mother died of colon cancer at the age of 80. My grandfather died at the age of 33 of the same cancer. My doctor recommends that I have colonoscopy and gastroscopy. She tells me that I would have general anaesthesia and it is a very safe procedure. I would have to stay in hospital overnight. I am very scared to go ahead with this. I have heard some bad stories about this procedure going wrong. I am a very healthy (in all aspects), slim 52 years old woman. I think I should wait a few more years for this procedure. What do you think? Thank you very much for your advice.