WHO Links Smoking to Severe Infertility Risks

A striking global health warning has emerged from the World Health Organisation (WHO), linking tobacco consumption directly to heightened infertility risks in both women and men. The comprehensive report underscores how active smoking, and even passive exposure to second-hand smoke, can severely compromise reproductive health, while highlighting that quitting the habit can offer a significant, measurable path toward recovery.

According to the WHO publication, which synthesized extensive clinical research spanning over two decades, women who currently smoke face a staggering 40 percent higher risk of infertility compared to non-smokers. However, the data also offers a strong incentive for cessation: women who successfully quit tobacco exhibit a 25 percent lower risk of infertility than those who continue to smoke, demonstrating that the reproductive system can recover significantly once chemical exposure stops.

Globally, one in six individuals of reproductive age experiences infertility at some point in their lives, highlighting a widespread challenge where tobacco cessation could play a vital preventative role.

The study dispels the misconception that fertility struggles are predominantly a female health concern. Analyzing data from dozens of studies involving over 60,000 men, the WHO identified a robust link between tobacco use and male reproductive dysfunction. Male smokers are significantly more likely to experience semen abnormalities—including low sperm motility, abnormal sperm shape, and a complete absence of sperm—alongside clinical challenges like erectile dysfunction and ejaculation disorders.

Beyond natural conception, tobacco use also severely hinders the efficacy of assisted reproductive technologies. The report highlights that cigarette smoking roughly halves the chances of success for procedures such as in vitro fertilisation (IVF), leading to significantly fewer live births and successful pregnancies. Furthermore, while traditional cigarettes remain the most thoroughly documented threat, the WHO cautioned that newer nicotine delivery systems, including e-cigarettes, waterpipes, and smokeless tobacco, also carry emerging risks that require urgent further investigation.

In response to these findings, the global health body has urged healthcare providers worldwide to proactively counsel couples and individuals planning families on the severe reproductive hazards of tobacco. The WHO advocates for integrating brief, evidence-based smoking cessation guidance into routine clinical visits, positioning tobacco control as a cornerstone of reproductive healthcare and family planning services globally.