Can noise cause heart disease?

In general, long-term or intense noise exposure may increase the risk of heart disease—not by directly causing it, but by indirectly harming cardiovascular health through various mechanisms. The detailed analysis is as follows:

Long-term exposure to noise above 60 decibels, such as traffic or industrial noise, can stimulate the sympathetic nervous system, leading to persistently elevated blood pressure and increased heart rate. It also promotes the secretion of stress hormones like adrenaline and cortisol, which can damage vascular endothelial cells, accelerate the development of atherosclerosis, and increase the likelihood of heart conditions such as coronary artery disease, myocardial infarction, and arrhythmias. Additionally, noise can disrupt sleep quality, causing insufficient sleep or frequent awakenings. Chronic sleep disturbances themselves are independent risk factors for hypertension and heart disease, further increasing cardiovascular strain.

Short-term, low-intensity noise, such as normal conversation, has minimal impact on heart health in healthy individuals. However, even brief exposure to moderate noise levels may trigger discomfort in sensitive individuals or those with pre-existing cardiovascular conditions.

In daily life, efforts should be made to minimize noise exposure—such as using soundproofing materials or wearing earplugs—and individuals should regularly monitor their blood pressure and heart rate. Any signs of cardiovascular discomfort should prompt timely medical consultation, helping to protect heart health from multiple angles.