Two very different procedures
| Vasectomy | Tubal sterilisation | |
|---|---|---|
| Principle | Cutting or blocking the vas deferens, which carry sperm | Blocking or removing the fallopian tubes, which carry the egg |
| Procedure | 15 to 20 minutes, under local anaesthetic, as a day case. Usually by the no-scalpel technique | Surgery under general anaesthetic, most often laparoscopic |
| Effect | Delayed: about three months and some twenty ejaculations | Immediate |
| Check | A confirmatory semen analysis is essential before stopping other contraception | No check needed |
| Failure | about 1 in 2,000 once azoospermia is confirmed | about 1 in 200 in the first year; recent cohorts give higher figures |
| Recovery | A few days | One to two weeks |
The asymmetry is striking: vasectomy is simpler, safer, more effective and cheaper than female sterilisation. It is nonetheless far less often performed in most countries — a gap explained by perception, not by medicine.
Two clarifications on the failure figures
For vasectomy, the 1 in 2,000 figure applies after a semen analysis has confirmed the absence of sperm. Almost all real failures happen before that check, in couples who stopped other contraception too soon.
For tubal sterilisation, the classic 1 in 200 for the first year is now debated: large recent cohorts find markedly higher pregnancy rates, in the order of several per cent at ten years. The reliability gap with vasectomy is therefore probably wider still than reference tables suggest.
What sterilisation does not change
- Vasectomy: no effect on erection, desire, testosterone, sensation or the volume of the ejaculate — sperm make up a tiny fraction of it. It is not castration, and the confusion remains widespread.
- Tubal sterilisation: it does not bring on the menopause, does not stop periods and does not change hormone production.
- Neither protects against sexually transmitted infections.
The question of reversal
Reversal surgery exists, but its outcome is never guaranteed: pregnancy rates vary widely with the original technique, the time elapsed and age. It is often expensive and rarely funded. Sterilisation is decided on as permanent — that is the only honest way to present it.
One alternative exists for men: sperm storage before the procedure, whose conditions and cost vary by country.
Regret, and what predicts it
Regret is uncommon overall but not absent, and two factors predict it robustly: a young age at the time of the decision and a decision taken in a moment of crisis — just after a birth, a separation, or under pressure from a partner. Having no children, by contrast, is not in itself a predictor of regret. This is one reason a waiting period is imposed almost everywhere between the first consultation and the procedure.
The rules vary from country to country
Minimum age, mandatory waiting period, whether a spouse's consent is required, a required number of children, funding: all of this is national law, and differs profoundly between countries — including neighbouring ones. One permanent device fitted through the cervix, once offered, has been withdrawn worldwide. See the country pages for the rules where you are.