According to a study by US researchers, children who had their tonsils removed tend to gain weight after the surgery. The research covered 795 children up to age 18 who are normal weight or overweight and had tonsillectomy.
The most common reason their tonsils were removed was sleep-disordered breathing. The study participants were divided into three groups according to their BMI.
"When the diseased tonsils are removed, the child then is able to consume additional calories". Also the study suggests that "Children with chronic tonsillitis may have dysphagia or odynophagia that may lead to a reduced calorie intake".