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Passive smoking can affect the brain
Yet another study on the harmful effects of passive smoking! According to British research, exposure to other people’s smoke appears to increase the risk of cognitive problems and hence, dementia.
A cause and effect link had already been established among regular smokers. Researchers at Cambridge University analysed the saliva of 5,000 non-smokers with an average age of 50. The aim was to measure the levels of cotinine, which is simply nicotine transformed by the body. All participants completed a series of tests aimed at evaluating their brain function.
The non-smokers with the highest cotinine levels produced the poorest test results. In an editorial, Dr Mark Eisner of the University of California (San Francisco) has put forward a possible explanation. Passive smoking is known to interfere with brain development in the early years of life.
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