Detailed rundowns of lumpectomies, ultrasounds, mole removal, lap band surgery, any surgery whatsover, don't make for pleasant conversation. It's awkward to listen to someone you've just met talk about their health issues, because you want to be sympathetic while also desperately wishing you weren't hearing about it. It also might have the effect of reminding your date they need to call their grandparents, which isn't particularly fun or hot, either.