How many mg of zinc is safe to take in a day?

I want to lose weight but I’ve always been told “you’re too young to go on a diet you’ll never grow that way” so what is a safe diet for a 17 year old who wants to lose w...

My bones just see so small. Im currently 5 9, and about 135lb 17 years old. My dad is like 160lb and he is so much wider and just bigger in general than me, he s 5 8. And his bones...