Adolescent smokers prone to cause hearing impairment

A study showed that young people themselves to their mothers who smoke or who smoke during pregnancy will make young people of the brain white matter changes in the structure, which leads to abnormal brain development and could even enable them to produce hearing loss.

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"New Scientist" magazine recently reported that the United States Yale University School of Medicine researchers used a product called diffusion tensor imaging technique, two groups of young people's brain was studied. The first group of 33 people, their mothers smoke during pregnancy are all these young people have 25 themselves and are usually from smoking; second group of 34 people, including 14 people usually smoke, but their mothers during pregnancy does not smoking.

The results showed that mothers who smoke during pregnancy or on its own young people to smoke in adolescence, they are responsible for signal transmission to the ear signaling pathway in the brain white matter changes have taken place in which smoking occurred in young white matter the greatest change. The researchers believe that this result demonstrates that the human brain during adolescence are particularly vulnerable stage of the adverse effects of nicotine, as this stage is a lot of nerve center of the brain pathway maturation period.

The researchers plan next step in brain scans of young people quit smoking in order to test whether changes in the white matter can be reversed.

The study also showed that mothers who smoke during pregnancy, as well as their own young smokers more prone to hearing loss. They are more difficult than ordinary young people doing certain things at the same time and concentration to listen to anyone else speak.

The researchers pointed out that the nicotine with the nerve center of the brain to control the development of receptor binding, this may lead to inappropriate stimulation of abnormal nerve connections. Previous studies suggest that this occurred mainly in the fetal period. But the new results show that, after entering puberty, the brain is still vulnerable to the dangers of smoking.