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Could belly fat be hurting your sperm? new study investigates

NCT ID NCT01974947

Knowledge-focused Sponsor: Assistance Publique - Hôpitaux de Paris Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study examined 170 men from couples struggling with infertility to see if metabolic syndrome—a cluster of conditions like high blood pressure, high blood sugar, and abnormal cholesterol—is linked to poor sperm quality. Researchers measured sperm count and other sperm features, then compared them to markers of metabolic syndrome. The goal is to better understand why some men have fertility problems, which could eventually lead to better advice or treatments.

What this could mean

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

What this could lead to
If successful, this study could reveal how metabolic syndrome affects male fertility, pointing toward lifestyle or medical interventions to improve sperm health.
What could go wrong
This is an observational study, not a treatment trial. It only looks for correlations, so it cannot prove cause and effect or lead directly to a therapy.

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

Study facts

What this study's own registry entry says, in plain language.

Participants

170 people

The number who actually took part.

Started

Jul 2013

Finished

Jan 2016

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Man consulting for primary or secondary infertility, with or without earlier notion of paternity

Ages

18 to 45 years

Sex

Male participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 18 to 45 years-old man * man consulting for primary or secondary infertility, with or without earlier notion of paternity * patient insured with a social security scheme * patient who have had a prior medical consultation * patient who have done informed and written consent to participate in the research study Exclusion Criteria: * patient with problems understanding French * patient smoking more than two-pack-a-day * patient monitoring for viral risk. * man with an unidiopathic infertility which may be explained by: 1\) identifiable factors in direct questioning at the sperm analysis: * exposure to toxic products * infectious disease history * pathological anatomical background 2) factors identified at the etiologic investigation: cytogenetic and genetic

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Conditions

The condition(s) this trial relates to.

male infertility metabolic syndrome X

As listed by the trial registrant

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

Male infertility

Contacts and locations

Locations

  • Jean Verdier Hospital

    Bondy, 93140, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.