He has many, many allergies and anaphylaxis to dairy, nuts, eggs and possibly wheat (not going to experiment). So feeding him has always been a problem.
Last year he had a teacher who made the class watch a show on morbidly obese people and ever since then he has been eating less and less.
He picks at breakfast. His school lunch is mostly uneaten except for some rice crackers and a few bites of his soup or rice or pasta (whichever I give him that day). He comes home hungry but then just wants some crisps.
His doctor and asthma nurse have both said he is underweight. Significantly now. Anyone who sees him remarks about how thin he is.
I was very thin as a child myself but I don't know if I was that thin.
He says if he eats too much he will get fat