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Vasectomy
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Pregnancy Reproduction

Vasectomy

A vasectomy is a minor, permanent surgical procedure for birth control that prevents sperm from reaching the semen.

Overview

A vasectomy is a type of minor surgery that prevents a man from being able to get a woman pregnant. It is a permanent form of birth control.

How It Works

A vasectomy works by cutting the vas deferens, which are the tubes that carry the sperm out of the testicles. Once these are cut, sperm can no longer reach the semen—the fluid that the penis ejaculates during orgasm. Because there are no sperm in the semen, the man cannot get a woman pregnant.

The Procedure and Recovery

The surgery is quick, typically taking less than 30 minutes, and patients are usually able to go home the same day. While you may experience some discomfort, bruising, and swelling for a few days, most individuals fully recover in less than a week.

Effectiveness and Follow-up

While a vasectomy is one of the most effective forms of birth control, it is not immediately effective. It takes about three months, or approximately 20 ejaculations, before the procedure is fully effective. You must continue to use other forms of birth control until a health care provider tests your semen to confirm that no sperm remain.

Sex Life and Reversibility

Having a vasectomy does not affect your sex life. It does not decrease your sex drive, nor does it affect your ability to get an erection or have an orgasm.

While vasectomies can sometimes be reversed by reconnecting the vas deferens, this is not always successful. If you decide to have children later, another option may be to have sperm taken from your testicles for use in in vitro fertilization (IVF). However, both reversal procedures and IVF can be expensive and are not guaranteed to work.

Important Safety Note

A vasectomy does not protect against sexually transmitted infections (STIs), such as HIV. Using a condom every time you have anal, vaginal, or oral sex is the only way to protect against STIs.

Frequently Asked Questions

Most men can resume light daily activities within 2 to 3 days, but heavy lifting, vigorous exercise, and contact sports should be avoided for at least a week to prevent scrotal bleeding or hematoma formation. Sexual activity can generally be resumed after about 7 days, provided pain and swelling have subsided. Alternative birth control must be used, as the procedure is not immediately effective.
You should contact your surgeon if you develop a fever over 100.4 degrees Fahrenheit, rapidly increasing scrotal swelling or a large, painful lump (signs of a scrotal hematoma), worsening pain not relieved by over-the-counter medication, or active bleeding or yellowish discharge from the puncture or incision sites.
No. Sperm account for only about 2 to 5 percent of the total volume of an ejaculate. The vast majority of seminal fluid is produced by the prostate and seminal vesicles, which are unaffected by the procedure. Following a vasectomy, the volume, color, texture, and scent of semen remain virtually identical, and orgasm and erectile sensation are entirely unchanged.
post-vasectomy semen analysis (PVSA) is usually scheduled 8 to 12 weeks after surgery, after the patient has had at least 20 ejaculations to clear residual sperm from the reproductive tract. You collect a semen sample at home or in a clinic for laboratory analysis under a microscope. A man is cleared of the need for alternative birth control only after the sample confirms azoospermia (zero sperm) or rare non-motile sperm.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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