Lose hair? I wish! Only kidding, but I do have too much hair.
I did gain weight, but then I had alot on so I can't blame it entirely on the Depo. As for the bone density, it's just a theoretical risk (as is reduced fertility) with long-term usage. I was on it for 6 years. 5 years is typically "allowed". I switched off it as I def. want kids in the next 5 years and also b/c I have osteoporosis in my family.
I think Nelly doesn't want kids and gets her bone density checked to make sure it's okay. Might be wrong....