Traffic Noise and Obesity
Traffic noise and obesity – is there a connection? Researchers from the Norwegian Institute of Public Health say that they found that traffic noise can increase the risk of obesity.
In Norway, almost 1.5 million people are exposed to noise from traffic and aircraft that exceeds the recommended limit of 55 decibels, with road traffic contributing most of it. While there have been quite a few studies in recent years on the association between noise and increased risk of high blood pressure and cardiovascular disease, the risk of obesity was not known.
The study used data from two populations studies conducted using the same participants in different time periods. Researchers measured their BMI (body mass index) based on height, weight, hip, and waist measurements, and examined these in relation to the noise levels participants lived with on a daily basis. They also gathered data from questionnaires that participants answered on annoyance and sleep disturbance.
Researchers found a a statistically significant association between traffic noise levels and all three obesity markers: body mass index (BMI), waist circumference and hip-waist ratio (ratio between hip and waist circumference) among women, than in men. The link was stronger in those who had been exposed to the noise for several years. Among men, the association was stronger in those whose bedrooms faced a busy road, showing a link between poor sleep quality and obesity. The study concluded that increased and prolonged exposure to noise may increase risk of obesity by reducing sleep quality and increasing stress.
Study authors say more research is needed on the long-term effects of noise on health.
Category: News
