question: Dear Sir, My 11 month son is weighing only 7.5kg adn is very thin. Height wise he is fine he is 66 inches. He is good in eating too. He loves his food and eats properly. I am giving him Cow s milk as it suited him. Other milk he was not able to digest and vomit so I changed to cow s milk after he was 6 months old. I wonder why he is not gaining much weight so I did a stool test and belwo is the result. color-Brownish Yellow,Reaction-Acidic,Consistency,Pasty,Mucus-Present(++), Microscopic Examination Helminths