SemenBoost

Evidence

How to improve sperm health

What can reasonably be said about improving sperm health: confirm the result, treat causes, and separate semen changes from pregnancy.

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Clinician review
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Short answer

Start with a proper semen analysis and the cause, if one is found. NICE links excessive alcohol and smoking with semen quality, and links a BMI of 30 or over with a higher risk of reduced male fertility. A supplement that changes a semen parameter in a trial has not automatically been shown to improve pregnancy or live birth. Nothing here guarantees a better result.

Key takeaways

  • Repeat an abnormal test before you judge a lifestyle experiment.
  • Do not use testosterone to raise a sperm count. It does the opposite.
  • Stopping smoking is worth doing for health even though the fertility effect is uncertain.
  • Antioxidant evidence for live birth is very low certainty and disappears in a bias-restricted analysis.

A sensible order

  1. If you have no recent semen analysis, arrange a proper test rather than treating a guess.
  2. If a result is abnormal, plan the confirmatory test NICE describes before you judge whether a change “worked”.
  3. Tell a clinician about testosterone, anabolic steroids, recent fever, and testicular symptoms.
  4. Use lifestyle steps that a guideline actually supports, without expecting a number.
  5. Read supplement evidence as uncertain, and do not let an affiliate offer decide the conclusion. SemenBoost has no approved affiliate for these ingredients.

Habits with guideline backing

NICE tells clinicians to inform men that excessive alcohol is detrimental to semen quality, and that drinking within the UK low-risk guideline — 14 units a week, spread across several days — is unlikely to affect semen quality. It also says there is an association between smoking and reduced semen quality, the impact on male fertility is uncertain, and stopping will improve general health. Men with a BMI of 30 kg/m² or over are told they have an increased risk of reduced fertility. Those are not promises that a particular change will move you across a reference limit.

Heat, sleep and exercise have a weaker guideline footing. They are covered on the lifestyle pages so they are not presented as equal to the NICE statements above.

Supplements

The Cochrane review of antioxidants for male subfertility (2022) found very low-certainty evidence that antioxidants might increase live birth, based on 12 trials. When studies at high risk of bias were removed, that increase was no longer seen. Clinical pregnancy evidence was low certainty. This is the opposite of a product claim that an antioxidant “boosts fertility”.

Read ingredients separately: CoQ10, L-carnitine, zinc, selenium and omega-3. A change in count, motility or morphology is reported there only when the evidence says so, and it is kept apart from pregnancy.

Evidence

Limited evidence

There is no single intervention on this page with strong evidence that it raises live birth for men in general. Some actions are justified because a guideline links them to semen quality or general health. Supplement trials are easy to over-read.

A change in a semen measurement is not the same finding as a pregnancy or a live birth.

Related

Sources

  1. Fertility problems: assessment and treatment (NG257) — NICE, 2026
  2. Antioxidants for male subfertility — Cochrane, 2022
  3. Diagnosis and Treatment of Infertility in Men: AUA/ASRM Guideline (amended 2024) — American Urological Association, 2024
  4. Low sperm count — NHS
How this page was prepared

Drafted with automated research assistance and checked against the cited primary sources. A named clinician has not reviewed this page. Medical review is pending. Changes to reference values are not published automatically.