Chronic tonsillitis and a diet behind the nose. The lymph nodes create antibodies to kill any microbe that may enter through the mouth

Each individual is born with two lobes on the sides of the tongue at the junction of the oral cavity with the pharynx. They are the first line of defense in front of the microbes, as the tonsils are lymph nodes forming antibodies to kill any microbe that may enter through the mouth.
Therefore, they are of great importance especially in children, where they are exposed to microbes as a result of playing with the hand picked up and inserted into their mouth, so they are most affected by children between the ages of three and ten and after puberty begin to grow in size and grow with age.
As for the diet of the nose is glandular lymphoid lining nasal pharynx and usually only appear when the child is exposed to the microbes through the nose and grow and increase in size and be antibodies against the microbes and is usually called in people to protect the nose
And the removal of tonsils and diet behind the nose has become commonplace, although it is a surgical operation difficult and have risks, if the tonsils of this importance in terms of they are the first line of defense of the body and if the process has a risk, so why if the surgeon to remove them?