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App aims to cut salt and lower blood pressure in hypertensive patients

NCT ID NCT05396001

Disease control Sponsor: University of Michigan 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a smartphone app called LowSalt4Life can help people with high blood pressure reduce their sodium intake and improve blood pressure. The app provides tips and reminders to eat less salt. 410 participants with high blood pressure used the app, and researchers measured changes in blood pressure and salt intake. The goal is to see if a simple app can make a real difference in managing hypertension.

What this could mean

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

Active substance
LowSalt4Life mobile application (behavioural intervention)
What this could lead to
If it works, this could provide a simple, scalable tool for people with high blood pressure to reduce salt intake and improve blood pressure control.
What could go wrong
This is a completed study, but the app may not work for everyone, and benefits may be small. Results may not apply to people without smartphones or with different diets.

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

410 people

The number who actually took part.

Started

Aug 2022

Finished

Oct 2025

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 years and older

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: 1. Diagnosed with essential hypertension (HTN) by a medical provider and are on stable doses of antihypertensive therapy for at least three months prior to enrollment as documented in the electronic health record (EHR) and confirmed by participant self-report. 2. A smartphone with a compatible Apple or Android operating system installed and able to download and use LowSalt4Life app including accepting all permissions and willing to allow the mobile applications to send push notifications 3. A valid email address 4. Fluent in spoken and written English Exclusion Criteria: 1. Unstable symptoms or markedly elevated blood pressure (BP) at enrollment (defined as systolic BP\>180 mmHg, diastolic BP\>120 mmHg) 2. Contraindication to a sodium restriction diet 3. An estimated sodium intake less than 1,500mg per day 4. Known secondary causes of HTN (e.g., adrenal insufficiency, pheochromocytoma) 5. Estimated glomerular filtration rate (EGFR) \<30 or end-stage renal disease on dialysis 6. Heart failure 7. Inability to use Withings devices (blood pressure cuff and scale) due to equipment limitations or contraindications 8. Currently pregnant or intent to become pregnant during the study period

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Conditions

The condition(s) this trial relates to.

essential hypertension hypertensive disorder

As listed by the trial registrant

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

Blood pressure Hypertension

Contacts and locations

Locations

  • The University of Michigan

    Ann Arbor, Michigan, 48109, United States

More trials for these conditions

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