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Fiber fix for fertility? study tests sperm boost in obese men

NCT ID NCT07112248

Symptom relief Sponsor: Huazhong University of Science and Technology 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at whether taking soluble dietary fiber supplements can improve sperm quality in men with obesity. 74 men took either fiber or a placebo for a period. The goal was to see if fiber could help with sperm movement, shape, and count, which are often poor in men with obesity.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

74 people

The number who actually took part.

Started

Aug 2025

Finished

Jan 2026

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.

Ages

18 to 60 years

Sex

Male participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: 1. Male, aged 18-60 years； 2. Diagnostic criteria for obesity: BMI ≥ 28 kg/m² and body fat percentage ≥ 25%; 3. Semen samples can be collected, and sperm concentration \> 0. Exclusion Criteria: 1. Spermatogenic dysfunction caused by non-obesity factors; 2. Severe systemic diseases such as cardiovascular/cerebrovascular, hepatic/renal disorders, malignant tumors, uncontrolled diabetes, or thyroid diseases; 3. Recent usage of medications/supplements affecting spermatogenesis or gut microbiota ; 4. Lifestyle factors potentially impairing sperm quality or severe gastrointestinal disorders; 5. Poor compliance, planned imminent fertility, or history of bariatric surgery/weight-loss medications; 6. Significant dietary changes within the past three months.

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Conditions

The condition(s) this trial relates to.

obesity disorder

As listed by the trial registrant

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

Gut microbiota Obesity-related poor sperm quality

Contacts and locations

Locations

  • Hubei Maternal and Child Health Care Hospital

    Wuhan, Hubei, China

More trials for these conditions

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