Tonsillectomy primarily affects nutrition after surgery. It is important to know what you can and cannot eat to promote healing and prevent complications. Here is a list of the soft foods to eat after a tonsillectomy and why they are preferred. The sleep pattern is continuously disrupted. This can lead to daytime sleepiness, bad mood, restless sleep, and, in kids, even bed-wetting. Other reasons to remove tonsils are recurrent strep throat infections, peri-tonsillar abscess, chronic throat pain, or, in adults, suspicion of cancer. Removing your tonsils does not weaken your immune system. Eating Foods After Tonsils Removed. The tonsillectomy diet can be a double-edged sword. On the one hand, the nutrition derived from solid foods is essential for out overall health and recovery from tonsillectomy surgery. .