The short explanation
Motility means how well sperm swim. A report showing low motility means a smaller share of sperm are moving forward well than the reference range used by the lab. It can make natural conception slower, but it does not mean pregnancy is impossible. A single result is not the final word. Semen quality changes from sample to sample, with recent fever, illness, heat exposure, smoking or a long or very short gap since the last ejaculation. Doctors usually repeat the test after some weeks before drawing conclusions.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Possible contributors include smoking, alcohol, heat (hot baths, laptops on the lap, some jobs), recent infections, varicocele (enlarged veins in the scrotum), hormone problems and some medicines.
- Sperm take around two to three months to develop, so lifestyle changes take that long to show in a report.
- If motility stays low, a urologist or andrologist can examine him and may suggest further tests. Depending on the results and the woman's tests, options range from lifestyle changes and treating a cause to IUI or IVF with ICSI.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This answer cannot interpret the actual numbers in the report or say what treatment, if any, is needed. A doctor reviewing both partners' results can.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- How far below the range is the motility, and are the count and shape normal?
- Should the test be repeated, and how should he prepare for it?
- Should he see a urologist or andrologist for an examination?
- Given both our results, what are our options and timeline?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Book an appointment soon
- He should see a doctor within a few days if he has a painful or swollen testicle, or a lump in the testicle.
Raise it at a routine appointment
- Book a routine follow-up to repeat the semen test and review both partners' results together.
Sources
The evidence this explanation is built on.
- Infertility NHS
- Infertility MedlinePlus (NIH)
- Infertility World Health Organization
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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