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Scientists call sudden threat of dirty air

Ученые назвали неожиданную опасность грязного воздухаAccording to researchers pollution reduces the chances of conceiving a child for many couples.

According to experts, about 48 million families can’t have children. Thus infertility usually affects men, the quality of the seed which is influenced by many external factors including pollutants, such as pesticides. It appears, however, that reduced fertility can lead and airborne solid particles composed of heavy metals and polycyclic aromatic hydrocarbons (PAHs).

Scientists have studied the effect of aerosol particles smaller than 2.5 microns for a semen quality 6475 men living in Taiwan. The volunteers participated in a standard program of medical examination in the period from 2001 to 2014, which allowed the researchers to collect complete information about their health. The obtained data were compared with analysis results of air, where he lived each patient.

Experts have discovered that the more polluted the air was, the less active sperm. Every extra five micrograms of particles per cubic meter contributed to the fall of the ratio of normal and defective germ cells by more than one percent. The researchers took into account factors such as Smoking and alcohol consumption.

PAHs are organic compounds having in its structure several benzene rings. These include naphthalene, pyrene, benzpyrene and other substances. Typically, polycyclic aromatic hydrocarbons are formed during oil refining, burning coal and wood.

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