1.Noise on the Job
Hearing loss is the third most common condition in the U.S., after arthritis and heart disease. One cause is loud noise in the workplace, like machinery. About 22 million Americans face unsafe levels of noise at work. Things like motorcycles and power tools also can hurt your hearing over time. Try to avoid noisy activities or take breaks from them often. Wear earplugs or ear protectors that fit over your ears.
2.Injury or Pressure Changes
A serious head injury can dislocate your middle-ear bones or damage nerves and cause permanent hearing loss. Sudden changes in pressure from flying or scuba diving could also harm your eardrum or middle or inner ear. Eardrums usually heal in a few weeks. But if your inner ear is badly injured, you may need surgery. Never stick cotton swabs or other objects into your ears. This can break your eardrum and cause permanent damage.