A long-term study of over 6,500 adults in the US has found a significant link between exposure to air pollution and an increased risk of blood clots in veins that bring blood to the heart. The study, funded by the National Institutes of Health (NIH), analyzed data from participants living in six major metropolitan areas and found that those with higher levels of long-term air pollution were at greater risk for developing deep vein thrombosis or pulmonary embolism.
The researchers, led by Dr. Courtney Thornburg, found a 39% increased risk for people exposed to the smallest particles of air pollution (2.5 micrometers) compared to those with lower exposure levels. The study also found that individuals exposed to oxides of nitrogen and nitrogen dioxide, pollutants often emitted from vehicle exhaust, were at an even greater risk.
The study’s findings are part of a larger research effort known as the Multi-Ethnic Study of Atherosclerosis (MESA) and shed new light on the relationship between air pollution and cardiovascular disease. With over 900,000 Americans affected by venous thromboembolism each year, this study provides valuable insights into the potential health risks associated with long-term exposure to air pollution.
The researchers controlled for various factors that can increase the risk of VTE, including age, tobacco use, and underlying health conditions. The study’s findings are published in the journal Blood and highlight the need for further research into the causes and effects of air pollution on human health.
Source: https://www.nih.gov/news-events/news-releases/long-term-exposure-air-pollution-linked-blood-clots-veins-bring-blood-heart