Smoking, why it matters, and what stopping actually does

Tobacco smoking is one of the most consistently-proven male fertility risks. A systematic review and meta-analysis (Sharma et al 2016, European Urology) showed smokers have around 13–17% lower sperm count on average, worse motility, and higher sperm DNA fragmentation. Testosterone also declines over time with sustained smoking.

Vaping is newer and less studied, but early evidence suggests a smaller but measurable similar pattern. Chewing tobacco and gutka, common in parts of the South Asian diaspora, carry their own male-fertility risk alongside the well-known oral-cancer risk.

Sperm production takes around 74 days, so changes after quitting are seen within 3 months. Sperm count typically recovers substantially within 6 months; DNA quality keeps improving beyond that.

If an IVF cycle is coming, stopping smoking 3 months before egg collection has a measurable effect on outcomes, reducing DNA fragmentation means healthier embryos at the point it counts.

Using the service doubles or triples the chance of successfully quitting compared to going it alone. It is not weakness, it is using the tool that works.