The World Health Organization has issued a sweeping new report that ties tobacco use to infertility, warning that smoking at any stage of life can impair reproductive health. The report, released by the WHO's Tobacco Free Initiative, synthesizes decades of research and underscores the global scale of the problem.
According to the WHO, infertility—defined as the inability to conceive after 12 months or more of regular, unprotected intercourse—affects roughly one in six people worldwide. The new analysis draws on a broad body of evidence to show that smoking undermines fertility in both women and men, and that even secondhand smoke exposure carries risks.
How Smoking Harms Fertility
The report details specific mechanisms by which tobacco smoke damages reproductive function. In women, smoking is linked to reduced ovarian function and can accelerate egg depletion. In men, the evidence points to lower sperm quality, abnormal sperm shape, reduced motility, and in some cases, the complete absence of sperm in semen. Smoking also increases the likelihood of erectile dysfunction and ejaculation problems.
These findings align with a growing body of research that has long flagged tobacco as a reproductive hazard. The WHO's report goes further, however, by quantifying the potential benefit of quitting. Women who had smoked in the past showed a 25 percent lower risk of infertility compared to those who continued to smoke, suggesting that cessation can yield meaningful improvements.
Secondhand Smoke and Fertility Treatments
The report also highlights the risks posed by secondhand smoke, which can affect fertility even in non-smokers. This broadens the public health implications beyond individual behavior, pointing to the need for smoke-free environments to protect reproductive health.
For those undergoing fertility treatments, the news is sobering. The WHO found that smoking reduces the success rates of assisted reproductive technologies such as IVF. This adds another layer of urgency for couples seeking to conceive, as smoking can undermine the effectiveness of costly and emotionally taxing procedures.
Emerging Products and Policy Recommendations
While the evidence on traditional cigarettes is robust, the WHO said that more research is needed on newer products like e-cigarettes, smokeless tobacco, waterpipes, and hookahs. The agency stopped short of declaring these alternatives safe, instead calling for further study to understand their reproductive impacts.
The report urges medical professionals to educate patients about the fertility risks of smoking and to offer resources for those who want to quit. This recommendation comes amid broader policy debates over tobacco regulation and public health priorities, where lawmakers and health officials are grappling with how to balance individual choice and collective well-being.
Health experts have welcomed the report as a timely reminder of tobacco's far-reaching consequences. "This is not just about lung cancer or heart disease," said one reproductive health specialist, speaking on condition of anonymity. "Smoking can quietly undermine one of the most fundamental human experiences—starting a family."
The WHO's findings are likely to reignite discussions about tobacco control measures, including taxation, smoke-free laws, and cessation programs. As international attention remains focused on geopolitical tensions, the report serves as a reminder that public health challenges persist and demand sustained political will.
For individuals, the message is clear: quitting smoking—or never starting—can protect fertility and improve the odds of conceiving. The report's authors hope that by highlighting these risks, more people will seek help to break the habit and safeguard their reproductive future.
