My son is 20 years old. About six foot three and weighs a solid 215 lb. He benches about 300+ and deadlifts 400+. We're thinking about doing a short lgd 4033. Looking at 6 weeks at 10 mg a day. At his age would he be risking infertility? I did anabolics pretty heavy for about 4 years starting at age 23. Had seven children with my wife. But I don't want to do anything that would compromise that for him.