How to increase sperm volume

By Dr (TCM) Attilio D'Alberto | Traditional Chinese Medicine Practitioner, Wokingham

On this page

1. Overview
2. What is a normal semen volume?
3. What determines semen volume?
4. Causes of low semen volume
5. A Chinese medicine view
6. Hydration — the quickest fix
7. Supplements that help
8. Lifestyle and diet
9. Chinese herbal medicine
10. Frequently asked questions

1. Overview

Low semen volume (hypospermia) — defined as less than 1.5 ml per ejaculate by WHO reference values — can reduce fertility by limiting the number of sperm reaching the fallopian tubes and by impairing the alkaline environment that protects sperm from vaginal acidity. It is one component of the broader picture of male infertility that I assess and treat in my clinic. In Chinese medicine, semen volume is closely linked to Kidney jing and Kidney yin — the fundamental substances that govern reproductive capacity in men.

2. What is a normal semen volume?

The WHO 2021 reference value for normal semen volume is 1.4–1.5 ml or above per ejaculate. Healthy men typically produce 2–5 ml. Volume varies considerably between ejaculations depending on hydration, time since last ejaculation, and overall health. A single low reading is not meaningful — a repeat semen analysis after 7 days of abstinence is the standard.

3. What determines semen volume?

Semen is composed primarily of secretions from:

• Seminal vesicles — approximately 65% of total volume; provide fructose for sperm energy and prostaglandins
• Prostate gland — approximately 30%; provides alkaline fluid that protects sperm from vaginal acidity
• Bulbourethral glands — approximately 5%; provide pre-ejaculate
• Sperm from the testes — less than 5% of total volume

4. Causes of low semen volume

• Dehydration — the most common and most easily corrected cause
• Frequent ejaculation — multiple ejaculations within 24 hours reduce volume; allow 2–3 days for full recovery
• Retrograde ejaculation — where semen flows backwards into the bladder rather than being expelled; common after prostate surgery and in diabetes
• Hormonal imbalance — low testosterone, low FSH, or hyperprolactinaemia all reduce volume
• Seminal vesicle or prostate dysfunction — including infection, inflammation or congenital absence of the seminal vesicles
• Ejaculatory duct obstruction — blocked ducts prevent normal release; consider on imaging if volume is consistently below 1 ml
• Medications — alpha-blockers, some antidepressants, finasteride and testosterone replacement therapy all reduce volume
• Excess alcohol — chronic heavy drinking reduces all semen parameters
• Age — volume declines slowly from the late 30s
• Anabolic steroids and TRT — suppress endogenous testosterone and semen production

5. A Chinese medicine view

In TCM, semen is considered an expression of Kidney jing — the most precious reproductive essence stored in the Kidneys. Low semen volume, along with low sperm count and poor motility, reflects Kidney jing deficiency, often compounded by:

• Kidney yin deficiency — provides the fluid base for semen. Symptoms include dry mouth, night sweats, lower back ache, heat in the palms.
• Kidney yang deficiency — provides the metabolic energy for semen production. Symptoms include cold lower body, low libido, weak knees, fatigue.
• Damp-heat in the lower jiao — from chronic prostatitis or infection; reduces volume and quality.

Excessive sexual activity, overwork, chronic illness and ageing all deplete Kidney jing.

6. Hydration — the quickest fix

Even mild dehydration measurably reduces semen volume. The fastest way to increase semen volume in a single ejaculation is simply to drink 1.5–2 litres of water through the day before. Maintaining steady hydration daily — rather than catching up the day before — is the most reliable approach. Aim for clear or pale yellow urine.

7. Supplements that help

• Zinc, 15–30 mg/day — essential for testosterone production and semen quality; deficiency directly reduces volume
• L-arginine, 3–6 g/day — amino acid precursor to nitric oxide; supports semen volume and motility
• L-carnitine, 1–3 g/day — supports sperm energy metabolism
• Lecithin — traditional supplement linked to sperm and seminal fluid quality
• Vitamin D — supports testosterone levels; supplement to a level of 75–125 nmol/L
• Selenium, 100–200 mcg/day — protects sperm from oxidative damage
• CoQ10 (ubiquinol), 200–400 mg/day — improves mitochondrial energy in sperm
• Maca root — traditional Andean herb with some evidence for semen volume and libido

See also vitamins to get pregnant.

8. Lifestyle and diet

• Hydrate consistently — 1.5–2 litres of water daily
• Mediterranean-style diet — oily fish, leafy greens, nuts, seeds, olive oil, lean meat
• Limit alcohol to under 7 units a week
• Stop smoking
• Avoid heat — saunas, hot baths, laptops on the lap, tight underwear
• Allow 2–3 days between ejaculations for maximum volume in fertile-window timing
• Manage stress — chronic stress lowers testosterone
• Adequate sleep — 7–9 hours per night supports testosterone
• Regular moderate exercise — supports testosterone and metabolic health
• Address weight if BMI is above 30 — obesity raises oestrogen and lowers testosterone

9. Chinese herbal medicine

Chinese herbal medicine is effective at tonifying Kidney jing and yin to support semen production. Key herbs include Shu Di Huang (the primary Kidney yin tonic), Gou Qi Zi, Tu Si Zi, and He Shou Wu. Classical formulas such as Liu Wei Di Huang Wan and Zuo Gui Wan provide a strong foundation for Kidney yin and jing nourishment. For Kidney yang deficiency, You Gui Wan and similar formulas warm and tonify Kidney yang. I prescribe pharmaceutical-grade granules from Sun Ten in Taiwan, tailored to the individual pattern.

Combined with weekly acupuncture over 12 weeks, treatment typically improves all semen parameters together. See also how to improve sperm morphology.

10. Frequently asked questions

How can I increase my sperm volume overnight?

The fastest single change is hydration — drinking 1.5–2 litres of water through the day before measurably increases volume. Allow 2–3 days since the last ejaculation. Beyond this, sustainable increases require addressing diet, supplements, lifestyle and underlying causes over weeks.

What is a normal sperm volume?

The WHO 2021 reference value is 1.4–1.5 ml or above per ejaculate. Healthy men typically produce 2–5 ml. Volume varies considerably between ejaculations.

What causes low semen volume?

Common causes include dehydration, frequent ejaculation, hormonal imbalance (low testosterone, high prolactin), seminal vesicle or prostate dysfunction, ejaculatory duct obstruction, certain medications (alpha-blockers, antidepressants, finasteride, TRT), retrograde ejaculation, excess alcohol and ageing.

What supplements increase sperm volume?

Zinc, L-arginine, L-carnitine, vitamin D, selenium, CoQ10 and maca root all have evidence or traditional use for supporting semen volume and quality. They are most effective combined as part of a 90-day plan.

How long does it take to increase sperm volume?

Hydration changes can be seen within 24–48 hours. Lifestyle, supplement and herbal interventions take a minimum of 90 days to show full effect because of the spermatogenic cycle.

Does retrograde ejaculation cause low volume?

Yes. In retrograde ejaculation, semen flows backwards into the bladder rather than being expelled, producing very low volume or none at all. It is common after prostate surgery and in diabetes. A urine sample after ejaculation that contains sperm confirms the diagnosis.

For a full male fertility assessment, contact me or book a consultation at my Wokingham, Berkshire clinic.

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