I don't know about anyone else's experiences, but family medical history has never been a topic of conversation on any of my first dates. Discussions like that tend to come way down the line, by which point it's either a deal breaker or irrelevant. I can't think of any medical condition that would be a complete killer for me, although something like MND would make me think. Hell, I've got family history of heart disease, cancer, diabetes (Type I & II), depression, alcoholism, you name it, so if anyone's that picky about medical potential, I'm certainly no catch.All of my grandparents lived into their 80s. So did my great-grandparents. Some of them lived into their 90s. However, my mother died in her 40s and some of my uncles, aunts and cousins have died at various ages and from a range of causes. Looking at the family tree, it seems that modern life is the killer. Two generations ago and further back, the main causes of death for people out of infancy in my family tree were old age and accidents. Most of the more recent ones have been heart disease and cancer.I tend not to find obese people attractive. Cuddly, plump, overweight, yes, but not when it comes to the stage of having to wear a bra for your back and not being able to clean yourself because you can't reach any more. By the same token, I'm not attracted to scrawny people either. Lean, fit and athletic are also fine in my book, but when body fat drops to low teens or single figures, so does any attraction. Research has shown that it's much less healthy to be underweight than overweight. There's a much greater risk of health complications in skinny people, so if you won't date a fat person based on potential health concerns, you'd better avoid skinny people too.Anyway, all of that's completely irrelevant if you get run over by a bus tomorrow, so who cares? Enjoy life and date who you like, not who you think your friends or anyone else would like.