The damaged sperm cells can endanger the health of the future child. Furthermore for boys there is a big chance that they will have the exact same broken sperm cells as their fathers and pass these on to their future sons as well.
This is all the result of an American study. The sperm defects come into existence if men smoke and drink a lot of alcohol for example. The researchers conclude that a healthy lifestyle is ever more important to the unborn baby than was thought till now. They strongly advise future fathers to quit smoking. Alcohol is okay, but only in small quantities.
In the study rats were exposed to chemicals that damage the quality of their semen. The sperm cells that were broken because of this were still present 4 generations later. Also prostate conditions and kidney diseases were passed on for several generations.
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