Asking Eric: We think our college-age son’s diet is ruining his looks

Dear Eric: Our son, who is in college, began losing his hair in high school. It could be genetic, but this does not run in the family. Although he is skinny, he eats terribly. He fills up on junk food, juice and soda. Sometimes he eats nothing.

When he lived at home, I could influence at least some of what he ate, but he always denied there was anything wrong. His pediatrician (male, for what it’s worth) always dismissed my concerns. I helped him find a new doctor when he turned 18 but now that he’s an adult, there is even less I can do.