Protect against noise — the most preventable cause

Noise-induced hearing loss (NIHL) is the most common preventable cause of hearing loss. It is caused by exposure to sounds above 85 decibels — either prolonged exposure at moderate levels or brief exposure to extremely loud sounds. Unlike age-related loss, NIHL can affect people of any age.

The 85 dB rule

OSHA and NIOSH guidelines establish 85 dB as the threshold above which hearing protection is recommended. For context:

• Normal conversation: ~60 dB
• Busy restaurant: ~75–85 dB
• Lawn mower: ~90 dB
• Power tools: ~95–110 dB
• Rock concert: ~110–120 dB
• Gunshot: ~140–165 dB

The safe exposure time halves with every 3 dB increase above 85 dB. At 88 dB, the safe limit is 4 hours; at 91 dB, 2 hours; at 100 dB, just 15 minutes.

Hearing protection options

• Foam earplugs: Inexpensive, highly effective (NRR 29–33 dB). Best for high-noise environments where sound quality does not matter.
• Earmuffs: Cover the entire outer ear. Effective and easy to put on and take off. Good for intermittent noise.
• Custom-molded earplugs: Made from impressions of your ear canals. More comfortable for extended wear; popular with musicians and industrial workers.
• High-fidelity (musician's) earplugs: Reduce volume evenly across frequencies, preserving sound quality. Ideal for concerts, musicians, and bartenders.
• Electronic hearing protection: Amplify safe sounds while automatically blocking dangerous ones. Used by hunters and military personnel.

Safe listening with headphones

The WHO's "60/60 rule": listen at no more than 60% of maximum volume for no more than 60 minutes at a time. Noise-canceling headphones allow you to hear clearly at lower volumes by blocking background noise — a significant advantage over earbuds in noisy environments.

Protect your cardiovascular health

The cochlea is one of the most metabolically active organs in the body and depends on a rich blood supply. Conditions that damage blood vessels also damage the cochlea:

• High blood pressure: Hypertension is associated with accelerated hearing loss. Managing blood pressure protects both heart and hearing.
• Diabetes: Diabetics are twice as likely to have hearing loss as non-diabetics. Blood sugar control matters for hearing health.
• Smoking: Smokers are 70% more likely to have hearing loss than non-smokers. Nicotine constricts blood vessels and reduces cochlear blood flow.
• Obesity: Associated with increased hearing loss risk, likely through cardiovascular mechanisms.

Regular exercise, a heart-healthy diet, blood pressure management, and not smoking all support cochlear health.

Be cautious with ototoxic medications

Ototoxic medications are drugs that can damage the inner ear. More than 200 medications are known to be ototoxic, including:

• Aminoglycoside antibiotics (gentamicin, tobramycin, streptomycin)
• Platinum-based chemotherapy drugs (cisplatin, carboplatin)
• Loop diuretics (furosemide) at high doses
• High-dose aspirin and NSAIDs (usually reversible)
• Quinine (used for malaria)

If you need to take an ototoxic medication, discuss the risk with your doctor. Baseline and monitoring audiograms may be recommended. Never stop a prescribed medication without medical guidance — the risk of the underlying condition may outweigh the hearing risk.

Monitor your hearing regularly

Regular hearing tests allow you to detect changes early — before they become significant. Early detection means earlier intervention, which is associated with better outcomes. Recommended screening intervals:

• Under 50, no risk factors: every 10 years
• 50–64: every 3 years
• 65 and older: every 1–2 years
• Any age with noise exposure, ototoxic medications, or family history: annually

Protect against infections

• Vaccinations: Vaccines for meningitis, mumps, measles, and rubella prevent infections that can cause permanent hearing loss.
• Treat ear infections promptly: Recurrent or untreated middle ear infections can cause permanent damage.
• Prenatal care: Cytomegalovirus (CMV) is the leading non-genetic cause of congenital hearing loss. Pregnant women should practice good hygiene to reduce CMV exposure.