In brief
Recent investigations reveal how pervasive noise, from traffic to social gatherings, is contributing to serious health issues like heart attacks and diabetes.
We live in a world surrounded by an invisible threat that we often overlook—noise pollution. Its effects have begun to emerge as significant factors in health crises, linking noise to conditions such as heart attacks, type 2 diabetes, and even dementia. "It's a public health crisis, yet we rarely discuss it," explains Professor Charlotte Clark from St George's, University of London.To explore the health risks of noise pollution, Prof. Clark and I conducted an experiment in a silent sound lab. Equipped with a smartwatch-like device monitoring my heart rate and perspiration, we listened to various sounds, particularly the cacophony of traffic noise from Dhaka, known as the world's noisiest city. The distressing sound prompted a rapid rise in my heart rate and my body's exertion of stress hormones."Traffic noise is directly harmful to your heart health," Prof. Clark confirmed as we progressed through several sounds, noting how emotional responses to noise trigger physiological reactions, aggravating health risks over time. Chronic exposure to such stressful stimuli endangers our health even while we sleep, as our bodies remain attuned to sound even in slumber.I met a resident named Coco in Barcelona who shared her struggles with the incessant noise in her neighborhood. The sounds of barking dogs and late-night parties have turned her home into a source of stress, contributing to her health crises. "I feel like crying," she said, having faced hospitalization due to noise-related stress.Research from Dr. Maria Foraster confirms that Barcelona experiences around 300 heart attacks and 30 deaths annually due to traffic noise. The European statistics show over 12,000 premature deaths attributed to noise each year. The pursuit of a quieter environment raises issues of urban lifestyle changes, as many people are habitually exposed to unwanted and disruptive sounds.Dr. Natalie Mueller from the Barcelona Institute for Global Health showed me a transformed urban area, once a bustling road, now relying on pedestrian zones to lower noise levels. Her studies indicate that reducing noise can save approximately 150 lives annually in Barcelona alone—a mere fraction of the potential health benefits.As urbanization intensifies in cities like Dhaka, the turmoil of daily life grows louder. Artist Momina Raman Royal's efforts to mitigate honking in Dhaka highlight both the urgency and challenge of addressing noise pollution. Environmental advisor Syeda Rizwana Hasan echoes concerns for public health and endorses measures for noise reduction.Solutions to noise pollution remain complex, but a communal effort towards creating quieter spaces is essential. As Dr. Masrur Abdul Quader aptly stated, noise is a "silent killer and a slow poison," urging us to seek refuge from the disruptive sounds vying for our attention in everyday life.
