Study Finds Traffic Noises Boosts Stress and Anxiety Levels

Manmade noises, like vehicle traffic, can reduce the stress-relieving effects of natural soundscapes, according to a November 27, 2024, study in PLOS ONE by Paul Lintott and Lia Gilmour.

Previous research shows natural sounds, such as birdsong, lower blood pressure, heart rate, and stress. In contrast, human-made noises like traffic negatively affect health.

In this study, 68 students listened to three 3-minute soundscapes: natural sounds alone, mixed with 20 mph traffic, and with 40 mph traffic. Participants rated their mood and anxiety levels before and after each session using self-reported scales.

Nature’s Sounds and Stress

The findings revealed that listening to the natural soundscape significantly reduced stress and anxiety, while also boosting mood recovery after a stressor. However, the calming effects were less pronounced when traffic sounds were added.

The pure nature soundscape resulted in the lowest stress and anxiety levels, while the version with 40 mph traffic led to the highest levels of distress.

The Case for Reducing Urban Traffic Speeds

The researchers suggest that lowering traffic speeds in urban areas could improve public health, not only by enhancing safety but also by preserving the therapeutic effects of natural soundscapes.

They conclude, “Our study demonstrates that natural soundscapes can reduce stress and anxiety, but these benefits are masked by traffic noise. Reducing urban traffic speeds is a crucial step toward allowing more people to experience nature’s positive impact on their health and well-being.”

Read Original Article: ScienceDaily

Read More: Scitke