The fact of longer life expectancy in women compared to men was known before. Now scientists have figured out finally why this is so. The authors of the opening were the researchers of the University of California VSAN Francisco (USA).
As explained by the representatives of science, human life span depends on the size of the telomeres – the end parts of chromosomes. Telomeres play the role of defenders, protecting the genetic material of otobrazhenii (e.g. prereplicative cells).
The female chromosomes, as it turned out, the telomeres than the men’s. American experts have established that lengthening telomeres and, therefore, life extension is facilitated by the hormone estrogen. It has a stimulating effect on protein enzyme that increases the activity of telomerase – the enzyme that increases telomere.
At the same time, telomeres can get shorter – it can affect the problems Cosgrove and unhealthy lifestyle. According to experts, men are more susceptible to harmful habits that further determines the difference in apropriatelly life in comparison with women. As a result, women live 5% longer than men.
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