Does Low Sperm Volume Mean Infertility? Causes, Tests and Treatment

01Normal semen values

WHO reference values (lower limits) for a semen analysis include:

• Volume: about 1.4 ml.
• Sperm concentration: about 16 million per ml.
• Total sperm number: about 39 million per ejaculate.
• Total motility: about 42%; progressive motility about 30%.
• Normal forms: about 4%.

Results below these do not automatically mean infertility, and results above do not guarantee it — they guide further evaluation.

02Causes of low semen volume

• Short abstinence (less than 2 days) or incomplete sample collection.
• Dehydration.
• Retrograde ejaculation (semen goes into the bladder) — with diabetes, some prostate medicines or surgery.
• Blockage of the ejaculatory ducts.
• Low testosterone.
• Infection or inflammation of the prostate or seminal vesicles.

03Causes of low sperm count or poor motility

• Varicocele (enlarged veins in the scrotum).
• Hormonal problems, thyroid disorders.
• Infections, including some STDs.
• Smoking, alcohol, recreational drugs, anabolic steroids and testosterone supplements.
• Obesity, diabetes.
• Heat exposure — hot baths, laptops on the lap, tight underwear.
• Genetic causes.

04How to give a reliable semen sample

1. Abstain from ejaculation for 2–5 days.
2. Collect the entire sample by masturbation into the sterile container provided — no lubricants or condoms.
3. Deliver to the lab within 30–60 minutes, kept at body temperature.
4. If abnormal, repeat after 2–3 months, because sperm production takes about 74 days.

05Further tests

• Hormones: FSH, LH, testosterone, prolactin, thyroid.
• Scrotal ultrasound for varicocele or blockage.
• Post-ejaculation urine test for retrograde ejaculation.
• Genetic tests in very low counts.

06Understanding your semen analysis report

A semen analysis report lists several values. Volume is the amount of fluid. Concentration is how many sperm are in each millilitre, and total count is concentration multiplied by volume. Motility shows the percentage of sperm that move, and progressive motility those that swim forward — important for reaching the egg. Morphology is the percentage of sperm with a normal shape; by strict criteria, only a small percentage are "normal" even in fertile men. Reports may also note pH, liquefaction time, white blood cells and vitality. Terms you may see include oligozoospermia (low count), asthenozoospermia (low motility), teratozoospermia (abnormal shape) and azoospermia (no sperm). A single abnormal result should be repeated before drawing conclusions.

07Lifestyle plan to improve sperm quality

1. Stop smoking and tobacco — smoking lowers count and motility.
2. Limit alcohol and avoid recreational drugs.
3. Reach a healthy weight — obesity lowers testosterone and sperm quality.
4. Exercise moderately — 30–45 minutes most days; avoid steroid use for body-building.
5. Keep the testes cool — avoid hot tubs, saunas, laptops on the lap and very tight underwear.
6. Eat well — fruits, vegetables, nuts, whole grains, fish; antioxidants may help some men.
7. Sleep 7–8 hours and manage stress.
8. Review medicines with your doctor.

Because sperm take about two and a half months to develop, give changes at least three months before re-testing.

08Male fertility: when to get checked

Couples are usually advised to see a doctor after 12 months of regular unprotected intercourse without pregnancy, or after six months if the woman is over 35. Men should get checked earlier if they have a history of undescended testes, testicular injury or surgery, mumps affecting the testes, chemotherapy, erectile or ejaculation problems, or a known varicocele. Male factors contribute to about half of couples' fertility problems, so both partners should be evaluated together rather than the woman alone.

09Treatments that help

• Lifestyle: stop smoking, limit alcohol, lose excess weight, avoid heat, exercise moderately.
• Treat infections and hormonal problems.
• Varicocele repair in selected men.
• Medicines for retrograde ejaculation.
• Assisted reproduction (IUI, IVF/ICSI) when needed.

Avoid testosterone injections or supplements if you want to conceive — they lower sperm production.

10Nightfall and masturbation myths

Nightfall and masturbation do not cause infertility or "use up" sperm. See how to stop nightfall and what is dhat syndrome.

11Fertility consultation

Dr. Yuvraj Monga evaluates male fertility privately at Lajpat Nagar 4, Dwarka Sector 9 and DLF Phase 4 Gurugram, and online. See infertility treatment and low semen production treatment. Near the airport? Visit our clinic near Delhi Airport area.

12Retrograde ejaculation explained

In retrograde ejaculation, semen travels backwards into the bladder instead of out through the penis, because the bladder neck does not close properly during orgasm. Men notice very little or no semen at climax, and urine passed afterwards may look cloudy. Common causes are diabetes with nerve damage, some medicines used for prostate enlargement or blood pressure, and previous prostate or bladder neck surgery. The diagnosis is confirmed by finding sperm in a urine sample passed right after ejaculation. It is not harmful to general health, but it can affect fertility. Depending on the cause, a doctor may change medicines, prescribe medicines that help close the bladder neck, or recover sperm from urine for assisted reproduction. If your semen volume has suddenly reduced, especially with diabetes or new medicines, mention this to your doctor.