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While studies have repeatedly linked maternal smoking during pregnancy with reduced sperm count in male children, a new research showed that men whose fathers smoked at the time of pregnancy also had 50 per cent lower count of sperms than those with non-smoking fathers.

The findings showed that, independently of nicotine exposure from the mother, socioeconomic factors, and their own smoking, men with fathers who smoked had a 41 per cent lower sperm concentration and 51 per cent fewer sperm count than those with non-smoking fathers.