My 18month old son has not gained any weight since just before he was 12 months old. At first his endo was not concerned, because he was overweight a bit before this and she thought that he was jsut growing into his weight, but now I’m starting to worry...  Is this a sign of oversuppression? He is off the bottom of the growth charts in weight and height, but since his weight and height are both low, he looks like a healthy baby. What are some things I should ask the endo about??? What are soem long term effects of being over or under suppressed???