Does smoking affect tinnitus?

Smoking has significant adverse effects on health. One of the most prominent impacts is damage to the lungs and alveoli, as well as respiratory disorders such as asthma, chronic cough, and, in some cases, oral cancer. But does smoking affect tinnitus?

Does smoking affect tinnitus?

Long-term smoking can trigger tinnitus or exacerbate existing tinnitus symptoms. Cigarettes contain nicotine, tar, sulfur dioxide, carbon monoxide, and various carcinogens. Nicotine—the primary active ingredient in tobacco—stimulates both sympathetic and parasympathetic nerve endings of the autonomic nervous system, inducing vasoconstriction. When blood supply to the cochlea decreases, cochlear tissue becomes ischemic, leading to impaired cochlear function and resulting in either new-onset tinnitus or worsening of pre-existing tinnitus. Chronic tinnitus may easily progress to hearing loss and, in severe cases, even deafness.

The mechanisms by which smoking affects tinnitus include: 1. Smoking damages endothelial cells of small arteries and disrupts lipid metabolism, promoting atherosclerosis and hyaline degeneration of small arteries. This leads to progressive narrowing of the vascular lumen, reducing blood flow to the cochlea and causing cochlear ischemia and hypoxia—key contributors to tinnitus. 2. Carbon monoxide in cigarette smoke binds with hemoglobin to form large amounts of carboxyhemoglobin, thereby lowering blood oxygen saturation and partial pressure of oxygen. Consequently, systemic organ oxygenation is compromised. Over time, this results in diminished physiological function across multiple tissues and organs—including the cochlear sensory structures—which may manifest as aggravated tinnitus or hearing loss.

Patients are strongly advised to quit smoking in daily life, avoid noisy environments, and refrain from prolonged use of headphones for music listening. We hope this information proves helpful to you.