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Could sleep and diet boost fertility? major study investigates

NCT ID NCT05358483

Knowledge-focused Sponsor: Northwestern University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 follows women aged 18 to 44 who are trying to conceive at a fertility clinic. Researchers want to learn how lifestyle habits like sleep, nutrition, and physical activity before pregnancy affect the chances of having a baby. Participants will be followed for up to 25 years, and their children's health will also be tracked.

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 identify lifestyle changes that improve fertility and pregnancy success.
What could go wrong
This is an observational study, so it cannot prove cause and effect. Results may take many years to emerge.

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

About 1,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Sep 2021

Expected to finish

Dec 2046

An estimate. End dates often move.

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

The PROMISE Study is enrolling women undergoing IVF for the first time without use of a gestational carrier or donor oocytes.

Ages

18 to 44 years

Sex

Female 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: * Women ages 18-44 seeking pregnancy at Northwestern Fertility and Reproductive Medicine (FRM) who agree to 1. Be followed for a period for up to 25 years 2. Share information regarding their child's health * No prior IVF cycles Exclusion Criteria: * Women using donor oocytes or gestational carriers * Inability or unwillingness to provide informed consent for any aspects of the study

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Conditions

The condition(s) this trial relates to.

female infertility

As listed by the trial registrant

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

Infertility, female

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Northwestern Medicine Fertility and Reproductive Medicine

    RECRUITING

    Chicago, Illinois, 60611, United States

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