question: Hello doctor, I have an 11 year old son who weighs 25 kg and is 138 cm tall. Everyone feels that something is wrong with him, as he is losing weight from the past three years, and it is severe for the last year. He is a slow eater and eats for 40 minutes to an hour, even small meal. We keep telling him to eat fast, but he chews a lot and keeps the food in his mouth for a long time. He passes hard stool every day. In his childhood, he had a constipation problem, and he used to go once in three to four days. He is a pure vegetarian but has eggs. We try to give him a balanced diet as much as possible. He drinks milk in the morning by 6 AM. He is academically above average and has a good overall personality. He is having a problem in pronouncing "r," instead he pronounces it "l." He falls sick very rarely and takes a yearly anti-flu dose. At birth, he was in an incubator for 10 to 15 days with jaundice, as he swallowed amniotic fluid. I am attaching the CBC, thyroid profile, and vitamin D report. I will be glad if you help us in finding any real cause for his low weight.