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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Text-only messages Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Koa Family Study--A Community-Based Intervention to Improve Health and Well-Being

NCT04662593
View directory record Official record
Conditions
Obesity, Overweight, Diet, Healthy, Social Interaction, Weight Loss
Interventions
Whole Health Program
Behavioral
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Oct 10, 2021 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of an Interactive Mobile Phone-Based Brief Intervention to Reduce Substance-Impaired Driving

NCT05537116
View directory record Official record
Conditions
Driving Impaired
Interventions
Personalized feedback, Personalized feedback and text messages, Information Only
Behavioral
Lead sponsor
Western Kentucky University
Other
Eligibility
18 Years to 29 Years
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Bowling Green, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Text Messages and Physical Activity Among Teens

NCT01482234
View directory record Official record
Conditions
Physical Activity
Interventions
TXT Me
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
14 Years to 17 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 19, 2016 · Synced Sep 20, 2026, 8:03 PM EDT
Recruiting Not applicable Interventional

Preliminary Effectiveness of Enhanced Text Message + Incentives

NCT07420621
View directory record Official record
Conditions
Smoking Cessation, Pregnancy
Interventions
Text Messages, Incentives
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Multiple Risk Behavior Intervention in Health Care Settings

NCT01415492
View directory record Official record
Conditions
Health Behavior, Risk Reduction Behavior
Interventions
HD2+
Behavioral
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
2,440 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Smartphone Intervention for Relational and Mental Well Being

NCT04629755
View directory record Official record
Conditions
Depression, Loneliness, Relation, Interpersonal, Covid19
Interventions
Intervention
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
1,765 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 18, 2020 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional

BABY STEPS II: SMS Scheduled Gradual Reduction Text Messages to Help Pregnant Smokers Quit

NCT01995097
View directory record Official record
Conditions
Smoking, Pregnancy
Interventions
Scheduled Gradual Reduction Text Messages, Support Text Messages
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
331 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 7, 2019 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Text Message Quit Vaping Intervention for Young Adults

NCT04251273
View directory record Official record
Conditions
Tobacco Cessation
Interventions
This is Quitting, Assessment only Control
Other
Lead sponsor
Truth Initiative
Other
Eligibility
18 Years to 24 Years
Enrollment
2,588 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 9, 2024 · Synced Sep 20, 2026, 8:03 PM EDT
Recruiting Not applicable Interventional

Refer2Quit: Evaluating a Proactive, Tailored, Population Health Approach for Tobacco Treatment for Household Smokers Through a Pediatric Care Network

NCT06582693
View directory record Official record
Conditions
Smoking, Smoking Cessation, Second Hand Tobacco Smoke
Interventions
Refer2Quit
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
18 Years and older
Enrollment
3,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Time-Restricted Eating and Mindfulness-Based Stress Reduction to Reduce the Risk of Early-Onset Colorectal Cancer

NCT06022887
View directory record Official record
Conditions
Obesity, Colorectal Cancer, Microbial Colonization, Time Restricted Feeding, Stress, Psychological
Interventions
TRE, MBSR
Behavioral
Lead sponsor
Lisa Tussing-Humphreys
Other
Eligibility
18 Years to 39 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 20, 2024 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Stay Active Physical Activity Program

NCT04675658
View directory record Official record
Conditions
Healthy Lifestyle, Sedentary Behavior
Interventions
CBPA + family support, CBPA
Behavioral
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
Not listed
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 13, 2021 · Synced Sep 20, 2026, 8:03 PM EDT
Recruiting Not applicable Interventional

The REACH-OUT Trial

NCT07540143
View directory record Official record
Conditions
Hypertension, Reproductive Behavior, Primary Health Care, Electronic Health Record
Interventions
Health literacy-informed patient education materials, BP monitor, brief orientation, and portal tools, The MeDS assessment, Patient navigator support
Other · Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Sep 20, 2026, 8:03 PM EDT
Terminated Not applicable Interventional

ASK-PrEP (Assistance Services Knowledge-PrEP)

NCT05934877
View directory record Official record
Conditions
Substance Use Disorders, HIV
Interventions
PrEP navigation + text messaging, Standard of Care, Contingency Management
Behavioral
Lead sponsor
Friends Research Institute, Inc.
Other
Eligibility
18 Years and older · Male only
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Sep 20, 2026, 8:03 PM EDT
Recruiting Not applicable Interventional

Text-messaging Intervention to Support Parents After Their Child's Psychiatric Emergency

NCT06456762
View directory record Official record
Conditions
Parents, Self Efficacy, Mental Health Literacy, Psychiatric Emergency
Interventions
iPEACE: Intervention for Parent Education about Care after the ED, Text Messaging Reminders Only
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Results available

Evaluating an eHealth Solution for Screening in Pediatric Care

NCT04506294
View directory record Official record
Conditions
Pain, Stress Disorders, Post-Traumatic
Interventions
eScreen system
Behavioral
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
8 Years to 17 Years
Enrollment
320 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Lexington, Kentucky • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Sep 20, 2026, 8:03 PM EDT
Recruiting Not applicable Interventional

Prolonged Overnight Fasting and/or Exercise on Fatigue and Other Patient Reported Outcomes in Women With Hormone Receptor Positive Advanced Breast Cancer

NCT06123988
View directory record Official record
Conditions
HER2-positive Breast Cancer, Advanced Breast Cancer
Interventions
Prolonged Overnight Fasting, Moderate-Intensity Exercise, General Health Education Sessions
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older · Female only
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
3
States / cities
Phoenix, Arizona • Miami, Florida • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 20, 2026, 8:03 PM EDT
Recruiting Not applicable Interventional

Project Q: Cue-based Treatment Intervention to Promote Cessation Among People Who Smoke Lightly or Non-daily

NCT07425119
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Cognitive Behavioral Therapy (CBT), Cue-based treatment intervention
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Sep 20, 2026, 8:03 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Real-time Glaucoma Medication Adherence

NCT03194828
View directory record Official record
Conditions
Glaucoma
Interventions
Medication reminder, Medication monitoring only
Behavioral
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
8
States / cities
Augusta, Georgia • Grovetown, Georgia • Louisville, Georgia + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2018 · Synced Sep 20, 2026, 8:03 PM EDT
Not yet recruiting Not applicable Interventional

Nutrition Intervention Optimization to Better Utilize Resources and Support Health

NCT07713836
View directory record Official record
Conditions
Diabete Type 2, Obesity & Overweight, Nutritional Intervention, Food Insecurity
Interventions
Meal kits, No-prep meals, Culinary nutrition classes, Text messages
Behavioral
Lead sponsor
Tufts University
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2031
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Results available

Intervention to Improve Adherence in Teen Kidney Transplant

NCT01356277
View directory record Official record
Conditions
Kidney Transplantation, Medication Adherence
Interventions
Action-focused problem-solving, Electronic pillbox monitoring, dose reminders, and feedback
Behavioral · Device
Lead sponsor
McGill University Health Centre/Research Institute of the McGill University Health Centre
Other
Eligibility
11 Years to 24 Years
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
4
States / cities
St Louis, Missouri • Cincinnati, Ohio • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 17, 2018 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Phase 4 Interventional Results available

A Text Messaging Program for Smokers in Primary Care

NCT03174158
View directory record Official record
Conditions
Smoking Cessation
Interventions
Mailed nicotine replacement therapy, Text messaging, Brief advice
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 6, 2020 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Phase 4 Interventional Results available

Varenicline for Nicotine Vaping Cessation in Adolescents

NCT05367492
View directory record Official record
Conditions
Vaping, Nicotine Dependence
Interventions
Double Blind Varenicline, Double Blind Placebo, QuitVaping, This Is Quitting
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years to 25 Years
Enrollment
261 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

An Interactive Text-Message Based Brief Intervention to Reduce Substance-Impaired Driving Among College Students

NCT03496129
View directory record Official record
Conditions
Alcohol-Impaired Driving
Interventions
Personalized feedback, Personalized feedback and text messages, Information Only
Behavioral
Lead sponsor
Western Kentucky University
Other
Eligibility
18 Years and older
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Bowling Green, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 10, 2025 · Synced Sep 20, 2026, 8:03 PM EDT
Completed Not applicable Interventional Results available

physicAl aCtiviTy In minOrity womeN With Asthma Intervention

NCT03265665
View directory record Official record
Conditions
Asthma
Interventions
ACTION Intervention, Enhanced usual care
Behavioral · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 22, 2022 · Synced Sep 20, 2026, 8:03 PM EDT