It has long been known that women live longer than men, but until now scientists could not explain, from which it depends. There are many assumptions in this regard, for example, the fair sex less prone to bad habits, their immune system is stronger, they have much higher pain threshold, the body better absorbs fats, and are generally more enduring. Moreover, some argue that with the birth of a child, women rejuvenates the body.

All of these versions has recently added one more, according to which male life expectancy depends on the particular gene in their body. A group of researchers from Tokyo University of Agriculture investigated the genome of mice and found they have a gene Rasgrf1. As it turned out, precisely because of its males have greater body mass, but lower life expectancy than women.

In the scientific journal Human Reproduction, scientists published a paper where he talked about the results of their research. They observed the mice born from two mothers without a father. Receive embryos from the genetic material, which is contained only in the egg, it is now possible thanks to modern methods of genetic engineering. These cells begin to behave like sperm due to chemical exposure. Thus, mice born to two mothers, completely free of genetic heritage, which is transmitted through the father.

It turned out that such individuals at birth weight significantly less than their counterparts with normal genome, and life expectancy is longer by about a third and immunity is much stronger. "We have long been known that almost all countries in the world, women live considerably longer than men, and that these differences apply to many species of mammals," - said the head of the research team Prof. Tomohiro Kono.