Until now, scientists can not come to a clear conclusion: smoking affects fertility in man or not?

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According to medical observations over the past two decades significantly increased the number of couples experiencing problems conceiving. Approximately 35-40% of cases the reason lies in male infertility.
What is the real cause of low male fertility is uncertain. It is now believed that the main factors determining the fertility of men are: age, bad habits (smoking, alcohol), working conditions, taking anabolic steroids, infections, sexually transmitted diseases and others.
Until now, scientists can not come to a clear conclusion: smoking affects fertility in man or not? Researchers and doctors have only indirect evidence hiv of the potentially negative effects of smoking on semen quality. However, doctors still advise men to give up smoking if they plan to have children. The negative effects of alcohol
Unlike smoking, the negative impact of alcohol on the male reproductive system proven. It should be noted that moderate drinking hiv (one glass of wine a day) does not affect the quality of sperm.
Alcohol abuse can cause atrophy of the gonads. It is known that alcohol impairs the activity of the liver, which in turn affects the production of male sex hormones. Fertility and STDs
The disease, sexually transmitted infections (STIs) may have adverse effects on the testes, thus creating an obstacle to leaving men with testicular germ cells in the ejaculate. Among the STDs that affect fertility men often noted syphilis, gonorrhea and chlamydia.
In men negatively hiv affect fertility substances such as pesticides, heavy metals, and certain physical factors, such as high temperature and radiation. Working conditions, with the impact of the above chemical and physical factors may adversely affect the fertility of men. Reception anabolic steroids
To increase the power performance of some athletes (bodybuilders, bodybuilders) use anabolic steroids. These drugs reduce the production of hormones signal the pituitary and hypothalamus, and thereby reducing sperm production. After a sharp stop taking steroids develops withdrawal syndrome, accompanied by pronounced symptoms hiv of deficiency of male sex hormones. Age
Unlike women, men can have children and the elderly. Male reproductive system are less affected hiv by age. However, we can safely say that the probability of successful conception in young males is higher. Factors such as erectile dysfunction and decreased sex drive, usually found in the older age group, which will undoubtedly affect male fertility. Masturbation
For physiological effect of masturbation is no different from full intercourse, as it also leads to orgasm and ejaculation. If you engage in masturbation often, hiv reduced sperm reserves, which reduces the likelihood of conception.
As mentioned above, the high temperature negatively affect the quality of sperm. When wearing tight underwear testicular temperature increases, resulting in the death of sperm, and thus to reduce the fertility of her husband.
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