Occasional smoking may not affect spermatogenesis, while frequent smoking may affect spermatogenesis by decreasing sperm count, lowering sperm quality, and increasing the rate of deformities.
Men who only smoke occasionally may not have much effect on spermatogenesis, but frequent smoking may affect spermatogenesis due to the presence of nicotine, tar and other substances in cigarettes, which may easily lead to a decrease in the number of sperms, lower sperm quality, and an increase in the rate of sperm deformities, thus affecting male fertility.
Therefore, in order to avoid affecting fertility, smoking should be stopped about 3 to 6 months before preparation for pregnancy, and frequent consumption of alcohol should also be avoided to avoid adverse effects on fertility.
Before preparing for pregnancy, it is recommended to seek medical advice for routine semen testing to determine whether there are any abnormalities in the various sperm indicators, and then determine whether it is normal to prepare for pregnancy.