Surgery to remove tonsils and adenoids often seem like a healthy decision، but a new study suggests that this might backfire in a big way، as the Technical Times said. Researchers discovered that the removal of tonsils and adenoids in childhood often increases the risk of allergies and other upper respiratory tract illnesses. A child who has a tonsillectomy was three times more likely to get diseases in the upper respiratory tract، such as asthma and pneumonia. The findings were published in a study on June 7 in the Journal of the American Medical Association Otolaryngology Head and Neck Surgery. "We calculated disease risks depending on whether adenoids، tonsils or both were removed in the first nine years of life because this is when these tissues are most active in the developing immune system،" said coauthor Dr. Sean Byars. Children often get tonsils removed to prevent reoccurring strep infections، and the adenoids are removed to improve breathing. However، tonsils and adenoids act as the first line of defense against bacteria and viruses from entering the lungs and throat. Without them، people are more vulnerable to diseases. "For tonsillectomy، we found that only five people needed to have the operation to cause an extra upper respiratory disease to appear in one of those people،" said coauthor Professor Jacobus Boomsma.