Odds of cancer for something that's mostly about vanity..
taller people are taken more seriously, make more money, are rated more attractive, have more success
fact is, making your kid taller is one of the better things you could do for it to improve odds of success
also every time i hear something like this i have to wonder how well it is controlled... maybe if you correct for body fat percent it becomes lesser. or maybe being tall means u eat more so take in more total bad stuff, but eating a good diet makes this unimportant?