Can air pollution contribute to weight gain?

the Researchers first proved that the polluted air breathed by the residents of cities, causing heavy damage to the community of bacteria in their gut. But due to changes in the structure and functions of the intestinal microbiota in humans increases the risk of obesity and diabetes, gastrointestinal disorders and other chronic diseases.

the creators of the work note: when studying the negative impact of polluted air on the body focuses on the health of the respiratory system. So, just because of one toxic substances the lungs of a healthy person may eventually become a “light smoker”.

However, a number of works, points and other “side effects” of pollution. It including weight gain and changes your body’s ability to regulate blood sugar levels.

it was Also shown that in the emergency Department people often complain of problems with the gastrointestinal tract in those days, when the concentration of pollutants in the air is especially high. There are studies that have shown that young people are affected by a large number of exhaust gas has a higher risk of developing Crohn’s disease.

In the course of the new work of American researchers analyzed samples of feces obtained from 101 South California. Their average age was 19.6 years.

the Scientists used state of the art whole genome sequencing to determine the composition of the intestinal microbiota of volunteers.

the team Also examined data from air monitoring are located in areas where the participants lived. Professionals in particular were interested in concentrations of ozone, nitrogen dioxide and particulate matter suspended in the air.

it turned Out that, of all pollutants, ozone has the greatest impact on the diversity of microorganisms in the intestines. And this, in turn, may trigger the development of obesity and type II diabetes.

in addition, in the intestines of people exposed to the highest ozone in the Techation of the last 24 hours, there were more bacteria of the species Bacteroides caecimuris that indicates a heightened risk of obesity development.

overall, the researchers identified 128 bacterial species that are affected by the increase in ozone concentration. It clarifies that some of these microorganisms can affect the production of insulin, others produce metabolites, including fatty acids, which help maintain the integrity of the intestinal barrier and prevent inflammation.

These data were obtained taking into account age, sex, body mass index, diet and other factors.

In the future, the specialists intend to check the data obtained in the larger studies, and also to find whether the effects of air pollution on the formation of the intestinal microbiota during fetal development and at an early age.

Scientific article on the results of the new work presented in the journal Environment International.

by the Way, earlier “Conduct.Science” ( reported that air pollution may provoke a missed abortion and to violate the menstrual cycle of women. Also the impact associated with reduced cognitive abilities, the development of mental disorders and vision impairment.

Text: To.Science