Air pollution and weight gain
According to a study published in Diabetes Care, November 2022, exposure to fine particles, nitrogen dioxide, and ozone was associated with lower lean mass and higher fat mass among midlife women .
The study included 1 654 women who were part of the Study of Women’s Health Across the Nation. Air pollution exposures for women were determined based on residential addresses. Body size and composition measurements were made at approximately annual visits.
According to the results of this study, exposure to these pollutants could contribute to obesity.
Potential Explanations
Although the exact mechanism behind the link between air pollution, weight gain and obesity is not fully understood, several explanations have already been suggested.
One idea is that air pollution may alter the functioning of the hypothalamic-pituitary-adrenal (HPA) axis, leading to changes in metabolism, appetite regulation, and energy balance.
Air pollution can also affect the gut microbiome. This has a major impact on weight and metabolism.
Other Considerations
Consider other factors which may contribute to the observed correlation between air pollution, and weight gain. People living in low income communities are more likely than others to live in an area with high levels of air pollutants and higher obesity rates.
The link between air pollution, weight gain, and socioeconomic status may at least partly be due to differences in socioeconomic standing.
What can you do about it?
There are ways to reduce exposure to air pollutants. More research is needed to fully understand this link.
Tips for
- Keep informed about the local air quality.
- Limit outdoor activity, especially when pollution is high.
- Use air filters to improve indoor air quality and avoid indoor pollutants like tobacco smoke and chemicals.
- Support local, national and international efforts to reduce air pollutants. This includes supporting clean energy policies.
- Exercise regularly and eat well.
We can protect ourselves, our families and communities from air pollution.
