Aircraft Noise and Hypertension: Who Really Pays the Price?

Living under a flight path has long been suspected of doing more than fraying tempers. Now one of the most comprehensive investigations into the cardiovascular toll of aircraft noise suggests that the picture is more nuanced than a simple dose-response relationship. By pooling individual-level data from nearly 2,000 residents living near four major European airports, researchers have found that while aircraft noise exposure shows a positive trend toward higher hypertension prevalence, the association is not statistically significant once lifestyle and demographic factors are accounted for. More striking still, the effect appears to concentrate sharply in specific groups: men and older adults.

The study, published in Environmental Advances, merged data from two of Europe’s most rigorous airport noise investigations: the French DEBATS study, conducted around Paris-Charles-de-Gaulle, Lyon-Saint-Exupéry and Toulouse-Blagnac airports, and the German NORAH blood pressure study, centered on Frankfurt Airport. Together, they yielded a pooled dataset of 1,984 participants, with mean aircraft noise exposure of 53 dBA Lden, a day-evening-night noise indicator recommended by the World Health Organization for assessing health effects. Hypertension prevalence stood at 33 percent across the combined sample, defined by blood pressure measurements exceeding 140/90 mmHg or by a physician diagnosis with current antihypertensive medication use.

The methodological backbone of the study deserves attention. In DEBATS, trained interviewers measured blood pressure three times during home visits, while NORAH participants self-measured twice daily for three weeks using standardized devices that transmitted readings automatically via Bluetooth to a central database. Aircraft noise exposure was estimated using state-of-the-art tools: noise maps validated against on-site acoustic measurements in France, and FANOMOS radar recordings of individual flight movements combined with the German aircraft noise calculation method AzB in Germany. This careful exposure assessment over the twelve months preceding blood pressure measurement strengthens the temporal alignment between exposure and outcome, a persistent weakness in environmental epidemiology.

In unadjusted models, the results were suggestive. Each 10 dBA increase in Lden was associated with a 17 percent higher odds of hypertension in the pooled data, and a 26 percent increase in the French DEBATS sample alone. Systolic and diastolic blood pressure also rose significantly with noise exposure in DEBATS and in the pooled analysis. But when the researchers adjusted for confounders including age, sex, body mass index, occupational activity, physical activity, alcohol consumption and noise sensitivity, the association attenuated and lost statistical significance, with an adjusted odds ratio of 1.08 per 10 dBA increase. This pattern echoes the WHO meta-analysis of nine cross-sectional studies, which likewise found a positive but non-significant relationship.

What makes this study genuinely novel is its explicit modeling of the pathways by which noise might harm the cardiovascular system. The leading hypothesis in noise-health research holds that transportation noise triggers stress reactions, activating the hypothalamic-pituitary-adrenal axis, releasing catecholamines and cortisol, and stimulating the sympathetic nervous system. Chronic stress and disrupted sleep are both established risk factors for hypertension. The researchers therefore tested whether noise annoyance and impaired sleep quality mediate the relationship between aircraft noise and hypertension, using structural equation modeling with bootstrapped confidence intervals, a statistically rigorous approach that goes beyond the indirect inferences drawn by most previous work.

The mediation results were revealing. Aircraft noise exposure had a strong, consistent effect on annoyance in both studies, with standardized coefficients of 0.31 in DEBATS and 0.45 in NORAH. Yet annoyance translated into higher hypertension odds only in the German sample, producing a significant indirect effect there but not in France or in the pooled data. The authors point to a striking contextual difference: 54 percent of NORAH participants reported being highly annoyed by aircraft noise, compared with just 18 percent in DEBATS. This discrepancy likely reflects the opening of a new runway at Frankfurt Airport shortly before data collection, an operational change known to produce an excess of annoyance beyond what noise levels alone would predict.

Sleep, by contrast, emerged as a dead end in this analysis. Night-time noise exposure showed no effect on self-reported sleep quality in either study, and sleep quality showed no effect on hypertension. The authors caution that this null result may stem from measurement limitations: both studies assessed sleep with a single general question that did not mention noise. The WHO’s evidence review on noise and sleep has shown that when sleep questions do not explicitly reference a noise source, noise exposure appears to have little effect on reported sleep quality. Physiological sleep monitoring would be needed to capture the fragmented sleep architecture that noise can induce without conscious awareness.

The moderation analysis delivered the study’s most actionable finding. The effect of aircraft noise on hypertension was significantly stronger in men than in women in the pooled data, with an odds ratio of 1.14 per 10 dBA increase in men versus 1.02 in women, and a statistically significant interaction. This aligns with prior evidence from Sweden, Denmark and Italy showing sex-specific vulnerability to transportation noise. Age told a similar story: the noise-hypertension association grew steadily stronger across age strata and became significant only among participants aged 65 to 74, with an odds ratio of 1.29, and over 74, with an odds ratio of 1.41. One plausible explanation is that older people spend more time at home, yielding more accurate exposure estimates and less misclassification. They may also possess greater physiological vulnerability to environmental stressors.

Notably, noise sensitivity, often hypothesized to amplify noise’s health effects, played no moderating role here. The authors suggest this may reflect the limitations of single-item sensitivity measures compared with validated multi-item instruments such as the Weinstein scale used in studies that did detect moderation. The finding underscores how measurement choices can shape conclusions in environmental health research, and it highlights the heterogeneity that continues to characterize this literature, where some longitudinal studies report clear noise-hypertension links while others find none.

The stakes of resolving these questions are considerable. More than 112 million Europeans, over 20 percent of the population, live with transportation noise above 55 dBA Lden, and the European Environment Agency estimates that in 2021 alone, prolonged exposure to transport noise contributed to 73,000 premature deaths and 49,000 new cases of cardiovascular disease in Europe. Cardiovascular disease remains the world’s leading cause of death. While this pooled analysis stops short of confirming a statistically robust link between aircraft noise and hypertension in the general population, its identification of men and older adults as the groups most affected offers a sharper target for public health intervention, and its rigorous mediation framework sets a methodological standard for the next generation of noise-health studies.

Subject of Research: The association between aircraft noise exposure and hypertension prevalence, including mediation by annoyance and sleep quality and moderation by sex, age and noise sensitivity

Article Title: Does aircraft noise exposure increase the prevalence of hypertension? Mediation and moderation analyses

Article References: Kodji, M. K., Spilski, J., Lachmann, T., Nieden, A. Z., Lanoy, E., Brink, M., Schreckenberg, D., & Evrard, A.-S. (2026). Does aircraft noise exposure increase the prevalence of hypertension? Mediation and moderation analyses. Environmental Advances, 26, Article 100759. https://doi.org/10.1016/j.envadv.2026.100759

Image Credits: AI Generated

DOI: 10.1016/j.envadv.2026.100759

Keywords: aircraft noise, hypertension, blood pressure, noise annoyance, sleep quality, cardiovascular disease, environmental noise, DEBATS study, NORAH study, mediation analysis, public health, airports