In a direct fertility testing situation, we can show that two-thirds of smokers have lost some or a lot of their fertilizing capacity. |
Like other cells in the body, human sperm carry a receptor for nicotine, which means they recognize and respond to nicotine. |
Specialized testing clearly reveals a significant drop in fertility potential for men who are heavy tobacco smokers. |
The men who failed were smoking about twice as many cigarettes per day, an average of 19 per day, compared to the smokers who passed the [test]. |