Certain habits in individuals may lead to adverse effects on sexual health without being evident. Smoking is one of the most dangerous habits which have a very harmful effect on fertility of individuals. Most people either are not completely aware of the consequences or choose to turn a blind eye towards its harmful effects on fertility. Nicotine in cigarettes restricts the flow in blood vessels. For proper sexual arousal, regular blood flow is imperative in the penis in men or in the vagina of women. As smoking causes the blood vessels to constrict, one of the most common side effects of smoking is erectile dysfunction. Often smoking also causes the sperm count and motility to become alarmingly low. It may also affect the sperm quality.
People who smoke occasionally can be cured rather than who smoke regularly and continuously.