News ID: 204101
Published: 0457 GMT November 11, 2017

Smog may harm bones in older adults

Smog may harm bones in older adults

Exposure to air pollution can increase the risk for osteoporosis and broken bones in older adults, a new US study suggested.

Researchers analyzed data on 9.2 million Medicare enrollees in the Northeast-Mid-Atlantic area who had been hospitalized for fractures from 2003 to 2010, UPI reported.

The investigators found that even a small increase in exposure to air pollution particulate matter called PM2.5 was associated with an increase in fractures among older adults. PM2.5 is the label for fine inhalable particles with a diameter of 2.5 micrometers or smaller, according to the US Environmental Protection Agency.

The researchers also examined eight years of follow-up among 692 middle-aged, low-income adults in the Boston health survey.

The findings showed that people who lived in areas with higher levels of PM2.5 and black carbon — a type of air pollution from vehicle exhaust — had lower levels of an important calcium and bone-related hormone, and greater decreases in bone mineral density than did those exposed to lower levels of the two pollutants.

The study was published in The Lancet Planetary Health.

Senior author Dr. Andrea Baccarelli, a chairs environmental health sciences at Columbia University's Mailman School of Public Health in New York City, said, "Decades of careful research has documented the health risks of air pollution, from cardiovascular and respiratory diseases to cancer and impaired cognition [thinking skills], and now osteoporosis.

"Among the many benefits of clean air, our research suggested, are improved bone health and a way to prevent bone fractures."

While the study found an association between air pollution and bone problems, it did not prove a direct cause-and-effect relationship.


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