Tonsils are removed for two main reasons: repeated throat infections that don’t let up, and breathing problems caused by oversized tonsils blocking the airway during sleep. In children, airway obstruction is the most common reason. In adults, chronic infection drives most surgeries. Less commonly, tonsils are removed to drain an abscess or to biopsy tissue when cancer is a concern.
Repeated Throat Infections
Tonsillectomy for recurrent infections follows a specific set of thresholds known as the Paradise criteria, used by doctors in both the US and UK. Surgery is typically recommended when a child or adult has had at least seven documented episodes of sore throat in a single year, five or more episodes per year for two consecutive years, or three or more episodes per year for three consecutive years. Each episode needs to include at least one clinical sign: a fever above 101°F, swollen lymph nodes in the neck, white patches on the tonsils, or a positive strep test.
These thresholds exist because most people with occasional sore throats improve on their own or with antibiotics. Surgery is reserved for cases where infections keep coming back at a pace that genuinely disrupts quality of life, causes missed school or work, and hasn’t responded to less invasive treatment. If your infections fall below those numbers, doctors will generally recommend watchful waiting.
Obstructive Sleep Apnea in Children
Enlarged tonsils and adenoids are the leading cause of obstructive sleep apnea in children. When the tonsils are large enough to physically narrow the airway, a child may snore loudly, pause breathing during sleep, sleep restlessly, or breathe through their mouth. Over time, poor sleep quality can affect behavior, attention, and growth. For most children with moderate to severe sleep apnea, removing the tonsils and adenoids is the first-line treatment and resolves the problem in the majority of cases.
Parents often notice symptoms before a formal diagnosis: restless sleep, unusual sleeping positions (like sleeping with the neck extended), bedwetting, or daytime irritability that seems out of proportion. A sleep study can confirm the diagnosis and measure severity, but many pediatric ear, nose, and throat specialists will recommend surgery based on a combination of physical exam findings and symptoms alone.
Abscesses and Unusual Growths
A peritonsillar abscess, sometimes called quinsy, is a pocket of pus that forms beside the tonsil. It’s painful, can make it difficult to swallow or open the mouth, and usually needs to be drained. In most cases, drainage and antibiotics are enough. But if an abscess forms inside the tonsil itself, sits in a hard-to-reach spot near the base, or keeps coming back, a surgeon may remove the tonsil at the same time as draining the abscess. Recurrence happens in roughly 1% to 5% of cases, and tonsillectomy is generally offered after a second episode to prevent a third.
Tonsils that look noticeably different on one side, with unexplained swelling or asymmetry, sometimes raise concern for growths including lymphoma or squamous cell carcinoma. These situations are uncommon, but when a doctor can’t explain the asymmetry through infection alone, removing the tonsil allows the tissue to be examined under a microscope.
Why Adults and Children Have Different Experiences
Children recover from tonsillectomy faster and with fewer complications than adults. In one study comparing pediatric and adult patients, adults reported significantly more pain and had a late bleeding rate of 20%, compared to about 6% in children. Adults also tend to have surgery for different reasons: chronic tonsillitis is the primary driver, while children more often have surgery for airway obstruction.
The overall risk of bleeding after tonsillectomy, across all ages, falls in the range of 0.2% to 2% within the first 24 hours and 0.1% to 3% after the first day. Most bleeding episodes are minor and stop on their own, though some require a return to the operating room. This risk is one reason recovery instructions emphasize hydration and avoiding certain foods and activities.
What Recovery Looks Like
Recovery takes roughly 10 to 14 days. There are no strict dietary rules after surgery. The guiding principle is simple: if it doesn’t hurt to eat, it’s fine to eat.
On the day of surgery, the priority is hydration. Small, frequent sips of water, electrolyte drinks, or popsicles work best. Over the first two days, soft foods like applesauce, yogurt, mashed potatoes, plain pasta, smoothies, and broth can be slowly introduced. Days three and four are often the most uncomfortable because scabs form at the surgical site. Cold foods tend to feel better during this stretch. From day five through day ten, the goal shifts to maintaining enough calories and fluids while the throat continues healing. Protein-rich options like Greek yogurt, nutritional shakes, and blended meals help. By days ten to fourteen, most people, especially children, are eating normally and returning to regular activities.
Pain management matters throughout. Adults in particular should expect throat pain that can radiate to the ears, peaking around days three to five before gradually improving.
How Surgical Technique Affects Recovery
Surgeons use several methods to remove tonsils, and the technique can influence how quickly you recover. A study comparing three common approaches found that traditional cold steel dissection (using surgical instruments without heat) led to less pain in the first week and a faster return to normal activity than electrocautery, which uses electrical heat to cut and seal tissue. A newer technique called coblation, which uses lower-temperature energy, showed a brief advantage over electrocautery in the first few hours after surgery but did not outperform cold steel dissection over the following week. Bleeding rates were similar across all three methods.
You won’t always get to choose your surgeon’s technique, but it’s reasonable to ask what method they use and why. The differences in recovery are real, though none of the techniques are dramatically worse than the others.
Long-Term Effects on the Immune System
Tonsils are part of the immune system, which understandably makes people wonder whether removing them leaves you more vulnerable to illness. The short answer: your immune cell counts and antibody levels stay largely stable after surgery. Multiple studies have found no significant long-term changes in the major antibody types or in T-cell counts measured four to six years later. At least one study did find modestly lower antibody levels years after surgery, but this remains an outlier among the research.
Where the picture gets more nuanced is with respiratory infections. One large population study found that tonsillectomy was associated with a roughly threefold increase in upper respiratory diseases. Deep neck infections also appeared more frequently in people who had their tonsils removed. These findings don’t mean surgery caused the infections directly, since people who need tonsillectomy may already be more infection-prone, but they do suggest tonsils play a meaningful role in defending the upper airway. This is part of why doctors reserve surgery for cases that clearly meet the clinical thresholds rather than recommending it casually.