Smoking is commonly associated with serious health conditions such as lung disease, heart disease, and cancer. However, its effects can also extend to reproductive health. According to the World Health Organization (WHO), tobacco use is associated with reduced fertility and an increased risk of infertility. WHO’s 2025 infertility guideline also identifies tobacco use as an important risk factor associated with infertility.
However, it would not be accurate to say that having a smoking habit makes it impossible for every person to have children. The correct fact is that smoking can reduce the chances of conception and may increase the risk of reproductive problems in some people.
Impact of Smoking on Female Fertility
According to the Centers for Disease Control and Prevention (CDC), smoking can make it more difficult for women to become pregnant and may increase the risk of never being able to conceive.
Various chemicals present in tobacco smoke can affect the body and reproductive system. WHO specifically notes that nicotine can damage the genetic material in eggs and sperm.
Therefore, for women who are planning to become pregnant in the future, quitting smoking is an important step toward protecting reproductive health.
Impact on Sperm and Male Fertility
Smoking does not affect only female fertility. According to the CDC, smoking can damage sperm and may also contribute to erectile dysfunction. Both of these problems can make it more difficult for a man to father a child.
However, the scientific evidence regarding smoking and semen quality is not equally strong for every aspect. Guidance from the American Society for Reproductive Medicine (ASRM) notes that evidence linking smoking with small effects on sperm concentration, motility, and morphology is of low quality. Therefore, it is not possible to determine exactly how much smoking will affect fertility in an individual person.
Does Smoking Definitely Cause Infertility?
No.
This is an important point that is often exaggerated in social media posts and viral claims.
According to WHO, tobacco use is associated with the risk of infertility, but infertility can have many other causes as well.
Age, hormonal problems, ovulation disorders, problems with the fallopian tubes, endometriosis, sperm-related problems in men, and several other health and lifestyle factors can affect fertility.
Therefore, it would not be scientifically correct to consider smoking the only cause of infertility in an individual.
Impact on IVF and Fertility Treatment
For couples undergoing fertility treatment or assisted reproductive technology (ART), avoiding tobacco is also important.
WHO’s 2025 infertility guideline recommends tobacco cessation as a lifestyle intervention for people and couples planning pregnancy.
This does not mean that IVF will definitely fail if someone smokes. Rather, quitting smoking is a healthier choice for reproductive health and pregnancy outcomes.
Smoking During Pregnancy Can Be Even More Dangerous
The risks associated with smoking are not limited to conception. Smoking during pregnancy can have serious effects on both the mother and developing fetus.
According to the CDC, smoking during pregnancy is associated with preterm birth, fetal growth restriction, low birth weight, stillbirth, and other pregnancy complications.
Therefore, for people planning a pregnancy, quitting smoking is important not only for fertility but also for protecting the health of the future pregnancy and baby.
Passive Smoking Is Also a Concern
The person who smokes is not the only one affected. People nearby can also be exposed to secondhand smoke.
According to WHO, exposure to tobacco smoke can cause health problems in non-smokers as well. WHO estimates that more than 1.6 million non-smokers die every year due to exposure to secondhand smoke.
Therefore, smoking by a family member can also create health risks for other people living in the same household.
Can Quitting Smoking Improve Fertility?
Quitting smoking is certainly beneficial for overall health and is also recommended for protecting reproductive health.
The CDC’s reproductive-health information highlights smoking cessation as an important step in relation to fertility and pregnancy outcomes.
WHO also recommends tobacco cessation for people planning a pregnancy.
Therefore, if someone is planning to have a baby, quitting smoking as early as possible is the better choice.
Information from health organizations such as the WHO and CDC makes it clear that smoking does not only harm the lungs and heart; it can also affect the reproductive health of both men and women.
In women, smoking can make conception more difficult, while in men it can affect sperm and erectile function.
However, it would be incorrect to claim that every smoker will definitely become infertile. Infertility is a complex condition with many possible causes.
If a couple has been having regular unprotected sex without achieving pregnancy for 12 months or longer, they should consider consulting a healthcare professional for a fertility evaluation.
The safest approach is for both men and women who are planning a pregnancy to stop using tobacco and, when necessary, seek help from a doctor or smoking-cessation specialist.
Disclaimer
This article is based on available information from reliable health organizations, including the World Health Organization (WHO), Centers for Disease Control and Prevention (CDC), and American Society for Reproductive Medicine (ASRM).
This article is intended for general health information only and is not a substitute for professional medical advice, diagnosis, or treatment. Anyone experiencing fertility-related concerns should consult a qualified doctor or fertility specialist for appropriate evaluation and guidance.
Social Plugin