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Infertility in Men

(Male Infertility)
  • Definition

    Infertility is not being able to conceive after a year of regular, unprotected sex. About one-third of infertility is caused by male factors and one-third are caused by female factors. In the remaining cases, the cause is unknown or is due to problems with both partners.
    Men are considered infertile if they:
    • Produce too few sperm cells
    • Produce sperm cells of poor quality
    • Have chronic problems with ejaculation
  • Causes

    The Male Reproductive System
    Nucleus factsheet image
    Copyright © Nucleus Medical Media, Inc.
    Portions of the brain called the pituitary gland and hypothalamus, as well as male reproductive organs such as the testes affect fertility in men. Problems in any of these areas may decrease fertility.
    In about half of the cases, a cause cannot be found. Some factors that can contribute to infertility include:
    • Genetics diseases, such as Klinefelter syndrome and Sertoli-Leydig cell syndrome
    • Exposure to workplace chemicals or heavy metals, such as primarily lead and cadmium
    • Tobacco use and marijuana use
    • Varicocele —enlarged veins within the scrotum
    • Abnormal hormone levels
    • Infections
    • Physical abnormalities
    • Cancer
    • Medications
    • Obesity
    • Chronic diseases, such assickle cell anemia
    • Excessive physical activity
    • Anti-sperm antibodies
  • Risk Factors

    Factors that may increase your chance of developing infertility include:
  • Symptoms

    Inability to have a child after one year of trying to conceive.
  • Diagnosis

    During the first visit, you and your partner will both be evaluated. You will be asked about your symptoms, medical history, and work history. Your doctor will look for potential exposure to certain chemicals. Your doctor will also look for physical problems that might cause infertility.
    Your bodily fluids and tissues may be tested. This can be done with:
    • Blood tests
    • Semen analysis
    • Biopsy
    Images may be taken of your bodily structures. This can be done with:
    Other tests may include:
    • Fertilization tests—to determine how well the sperm can penetrate an egg
    • Post-coital test—to check if your sperm is compatible with the mucus in your partner's cervix
  • Treatment

    Treatment depends on what is causing the condition. Treatments can be costly and lengthy. They often are not covered by insurance.
    Lifestyle Changes
    Lifestyle changes may include:
    Ask you doctor if a daily antioxidant supplement may help.
    Medication
    If you have a hormonal imbalance, your doctor may prescribe medication. Clomiphene citrate, for example, is an anti-estrogen drug. In combination with vitamin E, it may help increase sperm count and improve sperm movement.
    Surgery
    Surgery is done for conditions like varicocele that can affect fertility. Treatment of a varicocele does not always restore fertility.
    Surgery may also be done to reverse a vasectomy . This reversal is not always successful.
    Assisted Reproductive Technologies (ART)
    ART involves using human sperm and eggs or embryos in a lab to help with conception. The eggs and sperm can be from you and your partner or donated. ART methods include:
    • Artificial insemination—semen is collected and processed in a lab. It is then inserted directly into the woman's cervix or uterus.
    • In vitro fertilization (IVF) —an egg is removed from the woman's body and mixed with sperm in a lab. The egg and sperm mixture or a 2-3 day old embryo is then placed in the uterus.
    • Gamete or zygote intrafallopian transfer (GIFT or ZIFT)—an egg is removed from the woman's body and mixed with sperm in a lab. The egg and sperm mixture or a 2-3 day old embryo is then placed in the fallopian tube.
    • Blastocyst intrafallopian transfer—an egg is removed from the woman's body. The egg is injected with sperm and allowed to develop. It is later implanted into the uterus.
    • Intracytoplasmic sperm injection—a single sperm is injected into the egg. The resulting embryo can be implanted into the uterus or frozen for later use.
  • Prevention

    Infertility cannot always be prevented; however, the following steps may help:
    • Avoid:
      • Use of tobacco, marijuana, opiates, and anabolic steroids
      • Exposure to harmful chemicals and heavy metals
      • Excessive use of alcohol
    • Protect yourself from STDs by using condoms . Minimize the number of sexual partners you have.
  • RESOURCES

    American Society for Reproductive Medicine http://www.asrm.org

    RESOLVE: The National Infertility Association http://www.resolve.org

    CANADIAN RESOURCES

    Men's Health Centre http://www.menshealthcentre.net

    SexualityandU.ca http://www.sexualityandu.ca

    References

    I'm a guy; isn't this a woman's issue? Protect Your Fertility website. Available at: http://www.protectyourfertility.org/malerisks.html. Accessed October 27, 2014.

    Infertility in men. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated October 7, 2014. Accessed October 27, 2014.

    Jorgensen N, Carlsen E, Nermoen I, et al. East-West gradient in semen quality in the Nordic-Baltic area: a study of men from the general population in Denmark, Norway, Estonia and Finland. Hum Reprod. 2002;17:2199.

    Reproductive health and the workplace. The National Institute for Occupational Safety and Health website. Available at: http://www.cdc.gov/niosh/topics/repro. Updated June 10, 2014. Accessed October 27, 2014.

    Swan SH, Brazil C, Drobnis EZ, et al. Geographic differences in semen quality of fertile US males. Environ Health Perspect. 2003;111:414.

    9/2/2009 DynaMed Systematic Literature Surveillance http://www.ebscohost.com/dynamed: Ghanem H, Shaeer O, El-Segini A. Combination clomiphene citrate and antioxidant therapy for idiopathic male infertility: a randomized controlled trial. Fertil Steril. 2009 Mar 5. [Epub ahead of print]

    2/14/2011 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: Showell M, Brown J, Yazdani A, Stankiewicz M, Hart R. Antioxidants for male subfertility. Cochrane Database Syst Rev. 2011;(1):CD007411.

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