Public health experts have warned that frequent exposure to loud road noise can increase the risk of high blood pressure and other cardiovascular diseases. Studies have confirmed a link between loud road noise and several cardiovascular health conditions. The experts explained that exposure to wailing sirens, aggressive horns, and roaring engines of giant diesel trucks is harmful and can exacerbate existing health problems.
Commenting on a new study published on March 22, 2023, in the journal *JACC*, the experts noted that busy road noise was associated with a higher risk of hypertension—a major risk factor for heart attack and stroke. The study found that people living near traffic noise were more likely to develop high blood pressure and suggested a dose‑dependent relationship: the greater the amount of road noise, the greater the cardiovascular risk. The researchers emphasized that countries such as Nigeria must begin addressing this social menace.
In an interview with Healthwise, Professor Tanimola Akande, a public‑health professor, and Dr. Tunji Olaoluwa, a public‑health physician at Ogun General Hospital, described noise as a “slow killer” that raises the risk of disease and death. They cited additional findings that the risk of stroke rises by 11 percent, the risk of developing diabetes increases by 11 percent, and the risk of heart arrhythmia goes up by 6 percent. Professor Akande explained that persistent exposure to environmental noise can elevate blood pressure in hypertensive patients. He said, “Persistent exposure to road noise from sirens, aggressive horns, and heavy trucks can affect the health of those exposed. Acute effects include distraction, panic attacks, irritability, and annoyance. Long‑term exposure can lead to noise‑induced hearing loss, headaches, sleep disturbance, stress, high blood pressure, and an increased risk of heart disease.”
While noise alone does not cause stroke or heart attack, it does increase the likelihood of cardiovascular events. A study found that stroke risk rises by 14 percent for every 10 dB increase in traffic noise levels. Regarding prevention, Professor Akande stressed that the most important measure is to reduce noise exposure. Raising awareness of the health effects of traffic noise can help modify driver behavior, such as the frequent blasting of horns.
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