Ds is 16. He does not particularly like food. He eats at meal times mainly through it being the done thing. He never seems hungry. Sometimes he moans about having to eat dinner. He is on the very line of being under weight but I don't know how to fatten him up at all. He is very picky. The only saving thing is he drinks milk. If I didn't offer him food at meal times he really wouldn't bother. Does anyone else have experience of this? AIBU to be concerned?