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What Causes Infertility?

Infertility prevents conception from occurring between sperm and egg. Learn more about what causes infertility and how it can be treated.

Transcript: What Causes Infertility?

How Fertilization Occurs

The testicles of adult men produce about half a billion sperm each day. By contrast, women generally release only one egg per month. In order for fertilization and conception to occur, one of a man's many sperm must join the single egg released in a woman's oviduct or fallopian tube.

Causes of Infertility

There are many causes of infertility, and often times the reason for a couple's inability to conceive is never determined.

    Infertility in Men

    Some known causes of infertility in men include low sperm count or non-functioning sperm.

    Infertility in Women

    Infertility in women can be caused by many factors; some known causes can include failure to ovulate or blocked fallopian tubes. Severe endometriosis, a disorder where pieces of the uterine lining stray and adhere to reproductive organs, is also a common cause of infertility in women.

Diagnosing and Treating Infertility

Diagnosis and management by a physician may be successful in treating some couples with infertility. Some cases of infertility can be treated with medications or surgery. A physician can also discuss alternatives to natural conception, such as donor sperm, donor egg and adoption.

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Fertility

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