Trying for a baby? Research on smoking and fertility shows one of the most effective fertility treatments costs nothing: quitting smoking. Smoking harms fertility in both men and women — here is the evidence.
How smoking affects female fertility
- Faster depletion of egg reserve and earlier menopause (1–4 years).
- Longer time to conceive — up to twice as long.
- Higher miscarriage and ectopic pregnancy rates.
- IVF success rates roughly halved in smokers.
How smoking affects male fertility
- Lower sperm count, motility and more abnormal sperm.
- Higher sperm DNA damage, linked to miscarriage.
- Erectile dysfunction — smokers face significantly higher risk.
Pregnancy and beyond
Conception is only the start — see pregnancy risks and secondhand smoke dangers. Both partners quitting gives the baby the healthiest start.
Quitting restores fertility
- Sperm quality improves within 3 months (a full sperm cycle).
- Female conception rates rebound after quitting.
- IVF outcomes improve markedly.
Start today: quit guide, quit hub, Quitline 13 78 48, and your GP.
Smoking, IVF and Your Odds
The smoking and fertility evidence is starkest in IVF: smokers need higher drug doses, produce fewer eggs, face more cancelled cycles, and achieve roughly half the live-birth rate. Many clinics require quitting before treatment. Because smoking and fertility rebound after stopping, a 3-month pre-IVF quit window meaningfully improves odds.
A Pre-Conception Quit Plan
Planning pregnancy within a year? Set a quit date now: both partners (see secondhand smoke risks), NRT if needed under GP advice, and folate plus healthy habits alongside. Then read pregnancy risks, follow our quit guide, and use our quit hub and Quitline 13 78 48 for support.
Smoking and Miscarriage Risk
The smoking and fertility story extends past conception: smokers face roughly double the miscarriage risk, with danger rising per cigarette. Smoke chemicals damage the uterine lining, impair placental blood flow and injure developing embryos. Paternal smoking contributes too, via sperm DNA damage linked to early pregnancy loss. Every smoking and fertility specialist therefore advises both partners to quit at least three months before trying — sperm and eggs both benefit from the clean window.
Men’s Health: Erectile Dysfunction
Smokers develop erectile dysfunction at far higher rates because smoking damages the small blood vessels and nerves erections depend on — often years before heart symptoms appear. ED can be an early warning of cardiovascular disease, not merely a bedroom issue. Quitting measurably improves erectile function within months at any age. Discuss concerns with a GP, read the heart connection, and start our quit guide with our quit hub.
Did You Know? Sperm Renews Every 72 Days
A full sperm production cycle takes about 72 days — meaning three smoke-free months largely replaces damaged sperm with healthy stock. Female fertility responds similarly fast: conception rates rebound within months of quitting, and quitting before IVF measurably improves egg quality and implantation. Fertility specialists increasingly require verified quitting before treatment begins. Start your three-month window now with our quit guide, your GP, and our quit hub.
Smoking and Fertility: Key Takeaways
Smoking and fertility mix badly: women conceive slower with earlier menopause, men’s sperm quality drops, and IVF success roughly halves. Smoking and fertility recover encouragingly fast — sperm renews within three months and conception rates rebound after quitting.
Planning pregnancy? Read pregnancy risks and our quit guide, and get support at our quit hub or from your GP.
Health warning: Smoking kills. Smoking is harmful to your health and the health of those around you. For free help quitting in Australia, call Quitline 13 78 48 or visit quit.org.au.
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