Weightlifting?

When is it okay to, does it stunt your growth? I am 15 and would it be okay to start my brothers did. I don't think it stunted thier growth. They are short but, I think its genes.They are both about 5'7 and I am 5'4 I think. So I am short I guess never really thought about it that much but, I still don't want to stunt my growth or harm my body in another way.|||it doesn't stunt anything, it's b.s. I started when i was 13, now i'm 38, 5'9", 185 lbs.