Reviewed by Dr. Oreoluwa Ogunyemi, UrologistCheckmark | Last updated: April 7, 2020

What Does Hypospermia Mean?

Hypospermia is an abnormally low amount of ejaculate, or semen, expelled per ejaculation. The typical volume of semen per ejaculation is between 1.5 and 5 ml of ejaculate fluid. According to the World Health Organization (WHO) men with hypospermia expel less than 1.5 ml.

In order to conceive, sperm relies on a set amount of semen to aid in expulsion from the male to enter the female. As a result, this condition can be problematic for fertility.

Hypospermia may also be called a low semen production.

FertilitySmarts Explains Hypospermia

Once sperm is produced in the testes, it must travel through a series of male reproductive organs before being expelled from the penis. Ejaculate is composed of a variety of fluids gathered throughout the route.

The most substantial fluid is seminal fluid, contributed by the seminal vesicles, which comprises over 80% of ejaculate fluid. The remainder of the ejaculate is produced by the epididymis, prostate, and other glands.

Hypospermia can be caused by:

  • Retrograde ejaculation, when the semen goes backward into the bladder as opposed to being expelled through the urethra and out the penis. One study suggests this accounts for around 40.5% of patients with hypospermia.
  • Congenital and genetic defects that stop or decrease sperm production. One common genetic condition is Klinefelter’s syndrome which causes hypogonadism and hypospermia. It occurs in up to 1-2.5 of every 1000 men. Other congenital conditions include lack of the vas deferens or seminal vesicles.
  • Anejaculation, total lack of ejaculation
  • Ejaculatory duct obstruction (EDO)
  • Blockage of seminal vesicles
  • Hormonal imbalance, causing hypogonadism, or abnormally low testosterone levels
  • Excessive ejaculation, caused by overly frequent sexual activity or intercourse

Treatment of hypospermia is based on the specific cause and may involve medication changes, reparative surgery, or lifestyle changes.


Low Semen Production

Share this Term

Term Sources

FertilitySmarts uses high-quality sources to support the facts within our content including peer-reviewed studies, academic research institutions, professional organizations, and governmental organizations.

Related Reading


SpermDifficultySperm Problems

Trending Articles

Go back to top