Skip to main content
OpenTrials
Completed

NCT Number: NCT05972109

Metabolic Health Improvement Program: Effects of a Workplace Sugary Beverages Sales Ban and Motivational Counseling

The purpose of the study is to test the impact of a multilevel workplace intervention (hospital-wide sales ban on sugar-sweetened beverages (SSBs) and individual-level brief counseling) on employee health.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Obesity, Abdominal Body Weight Glucose Metabolism Disorders Hyperinsulinism Insulin Resistance Insulin Sensitivity Metabolic Diseases Nutrition Disorders Nutritional and Metabolic Diseases Obesity Overnutrition Overweight Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Sutter Health/California Pacific Medical Center Research Institute

San Francisco, California, 94115, United States

About this study

This double-randomized controlled trial of a multilevel workplace intervention that combines an employer-sponsored sales ban on sugar-sweetened beverages (SSBs) with brief counseling to support reduced consumption will test how well each intervention works alone, whether they work better in combination than separately, and whether or not changes in SSB cravings mediate these effects. Sutter Health worksites will be randomly assigned to either a control condition or to implement a sales ban on SSBs. Within all sites, employees will be randomized to receive/not receive a brief counseling intervention focused on reducing SSB consumption. Participants will complete self-report questionnaires, give blood samples, and provide measurements of waist circumference, height, and weight. These data will be analyzed to determine the effects of the interventions, both separately and in combination.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Full-time employee who works on campus at one of the Sutter Health participating sites
  • Speaks and reads English
  • Consumes three or more sugar-sweetened beverages (SSB) a week
  • Agrees to participate in two fasting blood draws

Exclusion criteria

  • Pregnant

Treatment and study plan

Workplace SSB sales ban

Other

Environmental Intervention. The hospital food services will replace sugary drinks with non-sugar added alternative beverages throughout the campus.

Brief intervention

Behavioral

Participants receive single-session brief intervention, which is an intervention that uses motivational interviewing, and helps participants understand amount and effect of their baseline SSB intake, identify realistic goals for reduction and overcoming obstacles.

Primary outcomes

  1. Change in Abdominal Adiposity (Waist Circumference)

    Time frame: Baseline and 12 Months

    Waist circumference in centimeters (using method from Multi-Ethnic Study of Atherosclerosis). The study will measure the change between baseline and 12 month Abdominal Adiposity measurements.

  2. Change in Insulin Sensitivity (HOMA)

    Time frame: Baseline and 12 Months

    Insulin sensitivity will be calculated using the homeostatic model assessment (HOMA). The equation for HOMA is fasting insulin (microU/L) x fasting glucose (nmol/L)/22.5. The study will measure the change between baseline and 12 month HOMA.

Secondary outcomes

  1. Change in Body Mass Index (BMI)

    Time frame: Baseline and 12 Months

    Body Mass Index [BMI] measured using height in centimeters and weight in kilograms to be calculated into BMI. The study will measure the change between baseline and 12 month BMI.

  2. Change in Quantity of SSB Consumption

    Time frame: Baseline and 12 Months

    Fluid ounces of SSB consumed per day using Automated Self-Administered Dietary Assessment Tool (ASA-24) and Beverage Intake Questionnaire (BEV-Q). The study will measure the change between baseline and 12 month SSB consumption quantity.

  3. Change in Lipid Profile Measurements

    Time frame: Baseline and 12 Months

    HDL, LDL, total cholesterol, triglycerides, and triglycerides:HDL ratio (calculated). The study will measure the change between baseline and 12 month individual lipid profile measurements (E.g., HDL, LDL, total cholesterol, triglycerides, and triglycerides:HDL ratio).

  4. Change in ApoB Levels

    Time frame: Baseline and 12 Months

    Blood level of ApoB. The study will measure the change between baseline and 12 month ApoB blood levels.

  5. Change in Fasting insulin Levels

    Time frame: Baseline and 12 Months

    Fasting blood level of insulin. The study will measure the change between baseline and 12 month Fasting insulin blood levels.

  6. Change in Fasting Glucose Levels

    Time frame: Baseline and 12 Months

    Fasting blood level of glucose. The study will measure the change between baseline and 12 month Fasting Glucose blood levels.

Other outcomes

  1. Change in Uric Acid Levels

    Time frame: Baseline and 12 Months

    Blood level of Uric Acid. The study will measure the change between baseline and 12 month Uric Acid blood levels.

  2. Change in HbA1C Levels

    Time frame: Baseline and 12 Months

    Blood Level of HbA1C. The study will measure the change between baseline and 12 month HbA1C blood levels.

Sponsors and collaborators

Lead sponsor

University of California, San Francisco

Other

Collaborators

  • California Pacific Medical Center Research Institute
  • National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
  • Sutter Health

Registry information

Official study title

Multi-Level Trial of a Workplace Sales Ban of Sugary Beverages and Brief Motivational Counseling Intervention on Adiposity

Acronym: MHIP

Important dates

Study start
2023
Primary completion
2025
Study completion
2026
First posted
Aug 2, 2023
Registry last updated
Feb 23, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.