Researchers from the Barcelona Institute of Global Health, in a study of 4,000 people in India, have found that air pollution causes osteoporosis which makes it easy to break and more fragile, according to the British "Daily Mail" website.

As inhaling pollutants in the air filled with toxic substances reduces bone density in the spine and hips.

The Spanish researchers, who conducted the study conducted between 2009 and 2012, believe that small pollutants leak into the blood when inhaled and accelerate the aging process.

Where airborne fine particles are emitted from sources such as gasoline, diesel and other solid fuels, such as coal, oil, and biomass, as well as other industrial activities, such as construction, mining, and construction of building materials such as cement, ceramics, and bricks, in addition to car exhaust, wood cooking and smoking, and can be inhaled and stabilized in The lung moves into the bloodstream.

And several previous researches showed a relationship between pollution, heart attacks, heart disease, lung cancer, Alzheimer's and asthma, while a few dealt with the effect of air pollution on the bones.

Over 80 percent of the world's population breathes unsafe levels of air pollution.