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Can the first 1,000 days stop obesity before it starts?

NCT ID NCT03191591

Prevention Sponsor: Massachusetts General Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 completed study tested a program to prevent obesity in mothers and children from pregnancy to age 2. It involved 1,645 families at community health centers in Boston. The program used education, text messages, and provider training to promote healthy eating, physical activity, and sleep, while also addressing social needs like food and housing.

What this could mean

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

Active substance
First 1,000 Days Program (behavioral intervention including education, text messaging, and provider training)
What this could lead to
If successful, this program could help prevent childhood obesity and reduce health disparities in vulnerable families.
What could go wrong
The trial is completed but results are not yet widely published. The program is complex and may be hard to replicate in other settings.

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

About 1,645 people

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

Started

Aug 2016

Finished

Mar 2021

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

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

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: * All pregnant women receiving prenatal care at select community health centers in the Boston, MA area * All families of children aged 0-2 years receiving pediatric care at select community health centers in the Boston, MA area

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Conditions

The condition(s) this trial relates to.

Feeding Behavior Motor Activity Obesity Overweight sleep disorder obesity disorder prevention target

As listed by the trial registrant

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

Diet habit Feeding behavior Overweight and obesity Physical activity Sleep Social determinants of health

More trials for these conditions

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