Weed and sperm: new study investigates link in infertile men

NCT ID NCT02932527

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at whether cannabis use affects sperm quality in infertile men. Researchers compared sperm samples from 71 men who used cannabis and those who did not. They measured sperm DNA health and other factors to see if cannabis might be linked to fertility problems.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
cannabis
What this could lead to
If it succeeds, this could clarify whether cannabis use harms sperm quality in infertile men, guiding fertility advice.
What could go wrong
This is a small, observational study (71 participants) that only looks at sperm under a microscope. It cannot prove cause and effect, and results may not apply to all men.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

cannabis dependence Teratozoospermia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Caen University Hospital

    Caen, France

  • Lille University Hospital

    Lille, France

  • Rouen University Hospital

    Rouen, France

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