Transportation noise pollution and cardiovascular disease

Area of Science:

• Environmental Health
• Cardiovascular Medicine
• Epidemiology

Background:

• Transportation noise is a significant environmental stressor linked to increased cardiovascular morbidity and mortality.
• High-quality evidence implicates traffic noise in ischemic heart disease, causing substantial annual health-life-year loss in Western Europe.
• Nighttime noise disrupts sleep, elevates stress hormones, and increases oxidative stress, contributing to vascular dysfunction, inflammation, and hypertension.

Purpose of the Study:

• To review the indirect, non-auditory cardiovascular health effects of transportation noise.
• To provide an updated overview of epidemiological research and mechanistic insights into noise-induced cardiovascular risk.
• To propose novel risk markers and discuss noise-mitigation strategies for public health.

Main Methods:

• Comprehensive review of epidemiological studies on transportation noise and cardiovascular risk factors.
• Analysis of clinical and experimental studies for mechanistic insights into noise-induced cardiovascular effects.
• Evaluation of current and future noise-mitigation strategies and existing evidence.

Main Results:

• Transportation noise is linked to cardiovascular disease, with specific evidence for ischemic heart disease.
• Mechanisms include sleep disturbance, elevated stress hormones, oxidative stress, inflammation, and hypertension.
• Potential effects involve alterations in gene networks, epigenetics, gut microbiota, circadian rhythm, and metabolism.

Conclusions:

• Transportation noise poses a significant, non-auditory risk to cardiovascular health.
• Understanding these mechanisms is crucial for developing effective risk markers and mitigation strategies.
• Further research and public health interventions are needed to address noise-induced cardiovascular effects.