According to Slashdot, a recent study published in the European Heart Journal found a significant association between exposure to high levels of outdoor noise and elevated blood pressure. The researchers analyzed data from over 6000 participants from various European countries. They found that individuals living in areas with higher levels of traffic noise had a higher risk of hypertension. The study also observed that noise from road traffic relates strongly to elevated blood pressure compared to other sources of noise. Those are aircraft or railway noise.
The researchers proposed to apply noise reduction strategies. They may include traffic management and the use of noise barriers. The researchers believe that those responsible shall implement these measures to help combat the negative effects of noise on blood pressure.
Noise pollution has become a growing concern in urban areas.This study highlights one of its potential impacts on cardiovascular health. The findings reinforce the importance of prioritizing noise control measures in urban planning and transportation policies.
Key facts about noise pollution and hypertension
Mechanism of Impact
Noise pollution can cause hypertension by inducing stress and triggering the body’s “fight or flight” response. The latter leads to the release of stress hormones like adrenaline and cortisol. These hormones can raise heart rate and constrict blood vessels, leading to higher blood pressure.
Threshold Levels
Research suggests that regular exposure to noise levels above 65 decibels (dB) can increase the risk of hypertension. For reference, normal conversation is about 60 dB, while a busy street can be about 70-85 dB.
Night-Time Exposure
Night-time noise pollution is particularly harmful as it can disrupt sleep patterns. The latter can lead to sleep deprivation, a known risk factor for hypertension. Chronic noise exposure during the night can persistently elevate blood pressure, even during the day.
Vulnerable Populations
Certain groups, such as the elderly, children, and those with pre-existing health conditions, are more susceptible to the hypertensive effects of noise pollution. Additionally, occupational exposure to high noise levels, such as in construction or manufacturing, can significantly increase the risk of developing hypertension.
Dr. Mika Kivimaki, from University College London, said:
“Our findings suggest that reducing noise levels could be an effective public health intervention for preventing hypertension.”
