Study conducted between 1973-2001. in Sweden found that children born to fathers aged 45 or older were prone to mental health problems (particularly bipolar disorder) as well as rare genetic diseases such as dwarfism. However, scientists say that, despite this trend, the real risk to the child is actually not that great.
"Men should keep in mind not to put off having a baby too long, but that doesn't mean you shouldn't have a baby after 45," warns Allan Brown, MD, professor of psychiatry and epidemiology at Columbia University. Studies show that sperm quality declines with age, although British scientists have also recently concluded that a woman's age is still a decisive factor in conceiving a child.
Dr. Dolores Lamb, director of the Male Reproductive System Laboratory at Baylor Institute of Medicine, said: "I believe that male reproductive aging is underestimated in the medical community. Although some of the research in this area is controversial, after reviewing the published data, it can be said that age-related decline in male sperm quality. This is not at all surprising, since testosterone levels decline with aging, as does sperm quality." Because women are born with a set of eggs that stays the same throughout their lives, male sperm is constantly being renewed. And this, in turn, increases the likelihood of random mutations. It is these mutations that explain the increased risk of diseases of the brain, nervous system and genetic diseases in children,
Source estet-portal.com
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