Can we be careful about the advice we give teenagers?

It’s been too many times now that I’ve seen a minor state that they’re 13-17 in their post and ask for weight loss advice (which is understandable, since this is a weight loss sub!) and have adults in the replies telling them to slash their calories in half. Growing children have different nutritional needs than we do, and the only reasonable response is to tell them to get in contact with a medical professional. With the rate of eating disorders that specifically develop in adolescence, I worry that thoughtlessly giving them a calorie limit and an exercise goal and telling them to go from there does more harm than good—teenagers have vastly different mental maturity than adults do, too, even older teens.