Smoking doesn't just harm your lungs, brain, or heart—it also threatens your hearing. A comprehensive Japanese study, published in Nicotine & Tobacco Research by Oxford University Press, draws this sobering conclusion.
The study analyzed thousands of smokers and non-smokers, yielding clear results. “Researchers found a 1.2- to 1.6-fold increased risk of hearing loss among smokers compared to never-smokers,” explains Dr. Huanhuan Hu, chief scientist at Japan's National Center for Global Health and Medicine and the study's lead author.
Dr. Hu and his team tracked 50,195 Japanese workers aged 20-64, none with pre-existing disabilities. Participants completed lifestyle questionnaires and underwent annual hearing tests for up to eight years. Beyond the 20-60% elevated risk, findings showed heavier smoking correlated with greater hearing decline. Even after accounting for factors like age, occupation, health conditions (e.g., cardiovascular disease, diabetes, obesity), physical inactivity, and high-volume music exposure, Dr. Hu states, "These results provide strong evidence that cigarette smoking causes hearing loss and highlight the urgent need for tobacco control."
Encouragingly, the study found risks diminish within five years of quitting—even for short-term cessation, such as during pregnancy in women. This suggests tobacco's damage to hearing may be reversible.
Yet another compelling reason to quit smoking.
