Did you know that more than 2/3 of teen guys change their eating to increase muscle? They also use protein supplements (35% guys) and steroids (6%) and other “muscle enhancing” stuff (10%). More than a tenth of boys do 3 or more different things to increase muscles.
Worried about your teen son and body image? Maybe this ad-free, non-profit resource will help: http://drlauraoffutt.blogspot.com/2013/09/teen-guys-wanna-bulk-up-gonna-get-that.html