What Happens If I Have a Low Sperm Count?

You have just opened a report full of numbers you were never taught to read, and one line says that you have a low sperm count. Maybe a doctor mentioned it in passing. Maybe you and your partner have been trying for a baby for a while with no luck, and this is the first real clue why. Either way, the question that follows is almost always the same. What now?

The honest answer is that a low sperm count is common; it rarely means the end of the road, and there is usually a reason behind it that can be found and, in many cases, improved. Here is what actually happens, step by step, once that result lands in your hands.

What Counts As A Low Sperm Count

Doctors use the term oligozoospermia to describe a sperm concentration below the expected range. According to the World Health Organization's sixth edition laboratory manual for semen analysis, published in 2021, a sperm concentration of at least 16 million per millilitre is considered within the normal reference range [1]. A result below that figure is flagged as low, though it is worth remembering that these numbers come from a large group of fertile men and represent a statistical cut-off rather than a hard line between fertile and infertile [1].

A single low sperm count result also does not automatically mean much on its own. Semen quality can shift from week to week depending on illness, stress, heat exposure, and even how long it has been since your last ejaculation. That is why doctors almost always ask for a second sample, usually a few weeks later, before drawing any real conclusions.

It Does Not Mean You Cannot Have Children

This is the part most men need to hear first. A low sperm count reduces the odds of natural conception, but it does not remove them. Pregnancy still happens for plenty of couples where the male partner has oligozoospermia, sometimes without any treatment at all. When conception does not happen naturally within a reasonable time, there are established medical paths forward, including hormone treatment where a hormonal imbalance is the cause, surgery where a physical blockage or vein problem is responsible, and assisted reproduction, such as in vitro fertilization or intracytoplasmic sperm injection, where a single healthy sperm is selected and used directly.

Why Low Sperm Count Happens

There is rarely one single cause. According to the combined American Urological Association and American Society for Reproductive Medicine guideline on male infertility, a thorough evaluation usually starts with a medical history, a physical examination, and hormone testing where indicated, because male fertility problems can sometimes point to broader health issues as well [2].

One of the most frequently identified physical causes is a varicocele, which is an enlargement of the veins inside the scrotum, similar in principle to varicose veins elsewhere in the body. The same guideline notes that surgical repair should be considered in men who have a varicocele that can be felt on examination, infertility, and an abnormal semen analysis, since correcting the varicocele can improve sperm numbers in a meaningful share of cases [2].

Hormonal problems are another common thread. The testes rely on signals from the brain to keep sperm production running, and when that signaling breaks down, you get a low sperm count as a result. Genetic factors, previous infections, certain medications, and past surgeries in the groin area can all play a role, too.

The Lifestyle Side of The Story

This is the part within your control, and it is bigger than most men expect. A review of research on modifiable habits and male fertility found that smoking, heavy drinking, and excess body weight were each linked to measurable drops in sperm concentration, movement, and shape [3]. Being overweight or obese, in particular, has been associated with low sperm count, changes in hormone levels, and a higher rate of damage to the genetic material carried inside sperm, known as DNA fragmentation [4].

Alcohol deserves a specific mention. Research summarised in a recent review found that heavy drinkers showed noticeably higher rates of sperm DNA damage compared with men who did not drink, and that chronic alcohol use can disrupt the hormone system that controls sperm production, leading to a low sperm count [4]. Smoking works through a similar pathway, raising oxidative stress inside the body and damaging sperm along the way.

None of this means one big night out will ruin your fertility. It means that sustained habits, month after month, shape the environment in which your sperm are made. Sperm take around two to three months to fully develop, so changes you make today will not show up in a semen analysis tomorrow. Give it time.

What You Can Actually Do About Low Sperm Count

Start with the basics that the research keeps pointing back to. Cut down on alcohol, quit smoking if you smoke, and work towards a healthy body weight if you carry excess weight. Regular moderate exercise, decent sleep, and avoiding prolonged heat exposure to the groin, such as long stretches in hot tubs or laptops resting directly on your lap, are all reasonable steps grounded in the same body of evidence.

Beyond lifestyle, see a doctor if you and your partner have been trying to conceive for twelve months without success, or sooner if your partner is over thirty-five or if you already know of a fertility risk factor, such as a prior groin surgery or a known hormone condition. A doctor can order proper hormone tests, check for a varicocele, and refer you to a fertility specialist if needed.

It also helps to mention any medication you take regularly, since certain treatments for blood pressure, depression, or even hair loss have been linked to reduced sperm counts in some men. Bringing this up early can save months of guesswork later, and your doctor may simply switch you to an alternative rather than sending you straight to specialist testing.

Getting A Clear Picture Of Where You Stand

Before any of these decisions make sense, you need to know your actual numbers rather than guessing based on how you feel. A standard semen analysis measures count, movement, and shape, and a separate DNA fragmentation test looks at whether the genetic material inside your sperm is intact, which a routine analysis does not capture on its own.

If you would rather start that process privately before booking a clinic appointment, Sapyen offers a semen analysis and DNA fragmentation test kit that lets you collect your sample at home and send it for laboratory testing, giving you a clearer, more complete starting point for the conversation with your doctor. 

DNA Fragmentation Test

$399.00 $500.00

While this test includes our Core Semen Analysis—measuring count, movement, and shape—our DNA Fragmentation test also reveals the quality of the genetic material inside your sperm, also known as a DNA Fragmentation Index. High fragmentation can impact conception and pregnancy… read more

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References

1. https://www.who.int/publications/i/item/9789240030787/ 
2. https://www.asrm.org/practice-guidance/practice-committee-documents/diagnosis-and-treatment-of-infertility-in-men-aua-asrm-guideline-part2/ 
3. https://pmc.ncbi.nlm.nih.gov/articles/PMC7848840/ 
4. https://pmc.ncbi.nlm.nih.gov/articles/PMC11152437/