high school sports

So I have a friend whos little brother is on a high school wrestling team. We were at her parents talking with him and he was saying how he cant weigh more than 160 pounds or something. It was really weird because i have known him for a while and hes always been kind of a big kid and hes all skinny now. He looks really weird because i think he looks unhealthy skinny for how big his frame is. He then went on to tell me about all the ways he stays at this weight. He exercises alot which would be fine if that were it but its not. On top of exercising crazy amounts he'll exercise while wearing like all his winter clothes so he can sweat of some extra weight right before a weigh in. He continued to go on about taking laxatives and taking all these pills to get nutrients instead of filling up on actual food. I was appalled! I asked him "Does your coach know you do all that to make weight?" he was like "Of course! we have to make weight, its not an option." i started laughing because i was disturbed. why is this ok? hes 17 years old taking laxatives to lose weight. weird? i can not believe that an adult is ok with a kid doing this. does the school system know about things like this? but then i was reminded of the video we saw in class about the little girl gymnast and her psycho mom. I didnt even want to ask his parents if they were aware of this in fear of the answer.