How Smoking Hurts Fertility in Both Men and Women: WHO
The link between smoking and infertility has emerged as a major public health concern globally. Consequently, the World Health Organization recently released a comprehensive knowledge summary on reproductive risks. This report indicates that tobacco consumption impairs conception across both genders. Furthermore, global data show that one in six people experience fertility challenges during their reproductive years. Therefore, clinicians must routinely discuss tobacco exposure with patients seeking conception.
Understanding Smoking and Infertility in Women
A review of scientific literature between 2000 and 2026 highlights clear female reproductive hazards. Specifically, women who currently smoke cigarettes face a 40% higher risk of infertility than non-smokers. Moreover, toxic compounds in tobacco smoke damage ovarian reserve and disrupt hormonal balance. Fortunately, cessation provides substantial therapeutic benefits. Women who previously smoked but successfully quit experience a 25% lower risk of infertility compared to continuing smokers. In addition, exposure to second-hand smoke significantly lowers monthly conception rates among women.
The Detrimental Impact of Tobacco on Men
Infertility represents a shared reproductive challenge that equally affects men. In fact, a systematic analysis of 44 clinical studies involving over 60,000 men confirmed widespread reproductive damage. Male tobacco users frequently suffer from impaired semen quality and compromised sexual function. For example, research directly links smoking to erectile dysfunction and ejaculation disorders. In addition, tobacco toxins reduce sperm count, lower motility, and cause structural deformities in sperm cells. Therefore, male partners must actively participate in fertility-focused lifestyle modifications.
Assisted Reproduction and Second-Hand Exposure
Tobacco exposure severely undermines the efficacy of assisted reproductive technologies. According to pooled evidence from 21 studies, smoking reduces pregnancy and live birth rates after fertility treatments. In fact, cigarette consumption nearly halves the likelihood of successful in-vitro fertilisation outcomes. Furthermore, non-smoking partners remain vulnerable through passive inhalation. Second-hand tobacco smoke significantly increases female infertility risks. Additionally, emerging nicotine products such as e-cigarettes and waterpipes pose potential reproductive hazards that warrant caution.
Clinical Recommendations for Healthcare Providers
Physicians should proactively integrate smoking cessation into preconception counseling. Specifically, the World Health Organization advises clinicians to provide routine brief advice during all routine consultations. Even brief interventions lasting under three minutes can trigger meaningful cessation attempts. Moreover, clinicians should offer evidence-based pharmacological and behavioural therapies to prospective parents. Ultimately, eliminating tobacco smoke protects gamete health and optimizes both natural and assisted reproductive outcomes.
Frequently Asked Questions
Q1: Does quitting smoking reverse the risk of infertility?
Yes, quitting provides substantial benefits. In fact, former smokers show a 25% lower risk of infertility compared with individuals who continue to smoke.
Q2: How does tobacco smoking affect male fertility?
Tobacco use damages semen quality and impairs sexual performance. Specifically, it causes erectile dysfunction, ejaculation issues, poor sperm motility, and abnormal sperm morphology.
Q3: Does second-hand smoke also cause fertility problems?
Yes, non-smokers face notable reproductive risks from passive exposure. Consequently, second-hand smoke increases infertility risk in women and diminishes monthly odds of conception.
References
- Smoking may hurt chances of having a baby: WHO - ETHealthworld
- World Health Organization. Tobacco and Infertility: WHO Knowledge Summary. Geneva: World Health Organization; 2026.
- Practice Committee of the American Society for Reproductive Medicine. Smoking and infertility: a committee opinion. Fertility and Sterility. 2018;110(4):611-618.
