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Taipei, Taiwan – A recent study published in PLOS Global Public Health suggests a significant link between exposure to fine particulate matter (PM2.5) and increased skin redness across various age groups. Researchers warn that this connection could potentially elevate the risk of chronic skin conditions and even skin cancer.
The study, led by Fu-Yu Chan, Ph.D., from National Taiwan Normal University, examined 472 participants, divided into two age groups: 240 individuals aged 20 to 59 years and 232 individuals older than 60 years. The researchers aimed to understand the relationship between PM2.5 levels and skin redness, with a particular focus on sebum production.
The findings revealed a clear positive association between PM2.5 levels and the area of skin redness in both age groups. Specifically, for every unit increase in PM2.5, the redness area increased by 1.70 units in the younger group and by 2.63 units in the older group.
Furthermore, the study found a positive correlation between porphyrins (compounds associated with sebum) and redness area in the 20- to 59-year-old group. However, this association was not significant in the older group.
“The findings suggest that the interaction between lipophilic and carcinogenic substances in PM2.5 and porphyrins could elevate redness area levels and potentially increase the risk of chronic skin conditions and skin cancer,” the authors wrote.
Based on these findings, the researchers recommend that public health authorities implement annual skin health screenings, using skin redness as a potential indicator of PM2.5 exposure. This would allow for earlier evaluation of the broader health impacts of air pollution.
The study highlights the potential impact of environmental factors on skin health and emphasizes the importance of monitoring and mitigating air pollution.
More information: Fu-Yu Chan et al, Association between PM2.5 and skin redness features in Taiwan, PLOS Global Public Health (2025). DOI: 10.1371/journal.pgph.0004357
Disclaimer: This article is based on a single study and further research is needed to confirm these findings. The information provided should not be interpreted as medical advice. Individuals with concerns about skin health should consult with a qualified healthcare professional.
