Men who are obese, reduce their chances zaimet offspring.

In men with a body weight a much less viable sperm, as compared with men of normal weight, and these sperm are much more likely contain the genetic defects that reduce their ability to fertilize the egg, says The Times.

This discovery made by scientists from Center for Reproductive Biology in Atlanta, suggesting that male obesity, which in the past considered to be only one of the causes of infertility is often a key factor in the inability of couples having children. On the impact of obesity on female infertility attention for a long time.

Also, this study explains the decrease in the average number of sperm in men in western countries where obesity is reaching alarming proportions.

The group of scientists led by William Rudebushem took semen samples from 52 men, looking at them in relation to body mass index of men, which is calculated by dividing the weight of human (in kg) to square of the height (in meters). Index above 25 indicates more than weight, and 30 or more - about obesity.

Among men with a body mass index less than 25 the average number of normal healthy sperm in each ejaculation was 18.8 million for men with excess weight is the number fell to 3.6 million, while in men, obese, healthy, were all 700 thousand sperm. According to Dr. Rudebusha, the latter figure is bordered with infertility, as well as the chance of successful insemination, for example, with artificial insemination, severely reduced when the number of sperm is less than 3.7 million

Obesity has a significant impact on the quality of semen, and with increasing body mass index defects becomes more and more.

These findings raise the question of whether or not to take for the treatment of infertility in men with obesity, if they do not agree to lose weight. "We urge the men to lower their total body mass index", - said Dr. Rudebush, adding that if the weight exceeds the standard seriously, the treatment of infertility may simply not work. "If you pay for it out of your pocket, you just waste money," - underlines the scientist.

Then scientists from Atlanta are planning to examine the men who are obese, and lost, to determine whether the improved quality of their sperm.

How obesity affects semen, scientists have yet to be explained. At this time, they have several working theories. The quality and quantity of sperm may be disturbed due to obesity affect hormonal balance. Another theory is that because of fatty deposits in the testes pahu very hot, and it affects the characteristics of sperm. 'Testicles are located outside the body, and their normal temperature should not exceed 37 degrees Celsius, - explains Ruderbush. - If the fat deposits in pahu increases, it increases body temperature, which adversely affects the maturation of sperm. "

According to a study conducted in France, the rate of successful pregnancy after in vitro fertilization in women, obesity was 24.7%, while among women with normal weight - 35,4%.

According to in vitro fertilization clinics in Alabama, the birth of live children after in vitro fertilization in women with body mass index to 27 (normal weight) is 44.7% per embryo implantation, whereas in women with body mass index above 27, he is reduced to 27% .
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