Most ear infections are preventable with a few simple habits that keep your ear canals dry, your eustachian tubes clear, and your immune defenses strong. The right approach depends on whether you’re protecting yourself or a child, and whether the concern is water exposure, allergies, air travel, or recurring infections. Here’s what actually works.
Why Ear Infections Happen
Understanding the two main types helps you target the right prevention strategy. Middle ear infections (the kind children get most often) develop when fluid gets trapped behind the eardrum, usually because the eustachian tubes that connect the back of your nose to your middle ear become swollen or blocked. Bacteria or viruses then multiply in that stagnant fluid. Outer ear infections, commonly called swimmer’s ear, happen when water sits in the ear canal long enough for bacteria or fungi to grow.
Anything that causes swelling in the eustachian tubes (colds, allergies, cigarette smoke) raises the risk of middle ear infections. Anything that traps moisture in the ear canal or damages its protective skin lining raises the risk of swimmer’s ear. Prevention targets those two pathways.
Keep Ears Dry After Swimming and Showering
The CDC recommends a specific drying routine after any water exposure. Tilt your head back and forth so each ear faces down, letting gravity pull water out of the canal. Pull your earlobe in different directions while the ear faces down to help water drain. Then dry your ears thoroughly with a towel.
If water still feels trapped, use a hair dryer on the lowest heat and fan setting, holding it several inches from your ear. This gentle airflow evaporates residual moisture without irritating the skin. You can also ask your doctor about ear-drying drops to use after swimming, though these aren’t appropriate if you have ear tubes, a punctured eardrum, or an active infection.
Stop Using Cotton Swabs
Cotton swabs are one of the most common and most overlooked causes of ear infections. Pushing a swab into the ear canal creates tiny injuries in the skin, and cotton fibers left behind trigger inflammation and infection. The frequently reported consequences include wax impaction, outer ear infections, and even punctured eardrums. If an infection develops from a retained cotton fiber and goes untreated, it can spread to the outer ear structures.
Your ears are self-cleaning. Earwax naturally migrates outward, carrying debris with it. If you feel like wax is building up, wipe the outer ear with a damp cloth or talk to your doctor about safe removal options.
Manage Allergies to Protect Your Middle Ear
Allergic rhinitis (hay fever, seasonal allergies) is a major and underappreciated driver of ear infections. Allergies cause the same eustachian tube swelling that colds do, trapping fluid in the middle ear. A 2024 genetic analysis found that people with allergic rhinitis had roughly 12 times the odds of developing fluid-related middle ear problems compared to those without allergies. The link was strong enough that the researchers concluded treating allergies should be a key strategy for preventing these infections.
If you or your child deal with recurring ear infections and also have a stuffy nose, sneezing, or itchy eyes during certain seasons, getting allergies under control may be the single most effective thing you can do. Over-the-counter antihistamines and nasal sprays can reduce the swelling that blocks your eustachian tubes. Staying hydrated also helps thin out mucus so it drains more easily rather than pooling.
Eliminate Secondhand Smoke Exposure
Tobacco smoke irritates and swells the eustachian tubes, blocking the normal pressure equalization and fluid drainage in the middle ear. This leads directly to pain, fluid buildup, and infection. Children are especially vulnerable because their eustachian tubes are shorter, narrower, and more horizontal than adults’, making blockages more likely even without smoke exposure. If a child in your household gets frequent ear infections and anyone in the home smokes, removing that exposure is one of the most impactful changes you can make.
Preventing Ear Infections in Babies and Toddlers
Young children get more ear infections than any other age group, but several strategies meaningfully reduce the risk.
Breastfeeding
Breastfeeding directly provides antibodies and immune factors that help fight off the infections responsible for middle ear problems. Research from Nationwide Children’s Hospital found that each month of breastfeeding was associated with a 4 percent reduction in the odds of ear infection, with babies breastfed for six months seeing a 17 percent reduction overall. The protective effect appears to come from both the immune components in breast milk and the positioning of the baby during direct breastfeeding, which may reduce fluid reflux into the eustachian tubes.
Pacifier Use
Pacifiers increase the risk of middle ear infections, likely because the constant sucking motion changes pressure in the eustachian tubes and increases the chance of bacteria traveling from the throat to the middle ear. A study published in Pediatrics found that limiting pacifier use to only the moments when a child is falling asleep effectively prevented episodes of acute ear infection. You don’t necessarily have to eliminate the pacifier entirely, but restricting it to sleep times makes a real difference, particularly for children under 18 months.
Bottle Positioning
If your baby is bottle-fed, hold them in a semi-upright position rather than letting them drink lying flat. A horizontal position allows milk to flow toward the eustachian tubes, creating a breeding ground for bacteria.
Protect Your Ears During Air Travel
Rapid pressure changes during takeoff and landing can force the eustachian tubes closed, trapping air and fluid in the middle ear. This creates pain and, in some cases, sets the stage for infection. A few techniques help keep the tubes open during flights:
- Swallow and yawn during takeoff and before the plane begins descending. Both actions open the eustachian tubes and equalize pressure.
- Chew gum throughout the flight, especially during altitude changes.
- Try the Valsalva maneuver: close your mouth, pinch your nostrils, and gently blow air through your nose. This pushes air into the eustachian tubes and helps them pop open.
- Use earplugs designed for flying, which slow the rate of pressure change against your eardrum.
For babies, who can’t perform these maneuvers, give them a pacifier or bottle during takeoff and landing. The sucking motion naturally opens the eustachian tubes. Avoid flying when you or your child has a cold or active sinus congestion, since swollen tubes are much harder to clear.
Daily Habits That Lower Your Risk
Beyond the specific strategies above, a few general habits support ear health year-round. Staying well-hydrated thins mucus throughout your respiratory system, making it less likely to clog the eustachian tubes. Washing your hands regularly reduces your chances of catching the colds and respiratory infections that often precede ear infections, especially in children who are in daycare or school.
Avoid extreme temperatures when possible, as both intense heat and cold can worsen ear-related issues by increasing congestion or inflammation. If you’re prone to eustachian tube problems, keeping nasal passages clear with a saline spray can help maintain airflow and drainage before a blockage develops into something more serious.
For people who get recurrent swimmer’s ear, consider wearing well-fitting earplugs or a swim cap that covers the ears. Keeping water out of the canal in the first place is more reliable than drying it out afterward, especially if your ear canal shape tends to trap moisture.