cell contains our genetic information and if just one single gene is not working right it can have gene mendis appreciations on our health how genes control or life this is what i'm going to talk about with professor. who's the director of the institute of human and medical genetics of the bird and charity and who's a researcher here at the mechanics institute for molecular genetics welcome to check. on a far reaching consequences so before you do a genetic test get informed what it really means and talk to your doctor. some diseases can actually be caused by genes take colon cancer or breast cancer for example some special forms can be inherited it's a simple blood test can tell you if you're affected. is a retired physician. for a long time he didn't know that he has an unusually high risk of getting a certain kind of cancer. it's a genetic risk he was born with. at age twenty. one i was twenty my mother died of metal started colon cancer. while she was in hospital she warned my sister and me that we might get it too and couldn't bear it might be genetic and. like his mother the writer studi