LowSalt4Life: A Mobile Application to Reduce Sodium Intake And Blood Pressure

Completed · Not applicable

Conditions studied: Hypertension, Blood Pressure

In brief

This research is being done to learn if a smartphone app with and without a just in time adaptive intervention (JITAI) can help patients with hypertension manage their sodium intake and improve their blood pressure.

Key facts

Study ID

NCT05396001

Run by

University of Michigan

People needed

410

Starts

2022-08-15

Expected to finish

2025-10-31

Last updated by the study team

2025-11-18

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• 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.
• 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
• A valid email address
• Fluent in spoken and written English

You may not qualify if…

• Unstable symptoms or markedly elevated blood pressure (BP) at enrollment (defined as systolic BP>180 mmHg, diastolic BP>120 mmHg)
• Contraindication to a sodium restriction diet
• An estimated sodium intake less than 1,500mg per day
• Known secondary causes of HTN (e.g., adrenal insufficiency, pheochromocytoma)
• Estimated glomerular filtration rate (EGFR) <30 or end-stage renal disease on dialysis
• Heart failure
• Inability to use Withings devices (blood pressure cuff and scale) due to equipment limitations or contraindications
• Currently pregnant or intent to become pregnant during the study period

Where it is running

• The University of Michigan — Ann Arbor, Michigan, United States

Full record on ClinicalTrials.gov

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