Yes, I do believe height is affected. It's got something to do with the malabsorbtion or something, you don't absorb as much calcium... I'm not sure. I'm 155cm tall (5"1) and I'm 15. I'm a lot shorter than most people my age, although you do hear about a lot of cfers who only grow to around 5 feet. But there are also people who grow average heights aswell.