Obesity Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- People who have lost at least 5% of their body weight through non-surgical means in the last 3 months.
- People with a BMI (body mass index) between 20.5 and 45 kg/m².
- People aged between 25 and 65 years old.
- People who own a smartphone, or who are willing to use one if the trial provides it, for self-monitoring purposes.
Who may not be able to join:
- People who are pregnant, trying to become pregnant, or currently breastfeeding.
- People who have previously had weight-loss (bariatric) surgery, or who have planned surgery of this type.
- People with a current or past history of an eating disorder.
- People who are currently taking part in another weight-management research study.
- People who are currently following another weight loss program outside of this study.
- People who are currently taking appetite-suppressant medications.
- People who are currently following an intermittent fasting plan, or who regularly skip meals.
- People whose daily eating window is less than 11 hours and 59 minutes (confirm with trial site).
- People who do overnight shift work more than once a week.
- People whose work regularly involves travelling across one or more time zones.
- People taking medications that affect body weight or that would interfere with a restricted eating window approach (confirm with trial site).
- People who are unable or unwilling to provide informed consent to participate.
- People who are unable to participate meaningfully in the program, for example due to uncorrected vision or hearing difficulties.
- People who are unwilling to accept being randomly assigned to a study group.
- People who are unable to log at least 2 meals per day into the study's smartphone app for around 70% of the lead-in period (approximately 20 days).
- People who have type 1 or type 2 diabetes, or other conditions that would make restricted eating hours unsuitable (confirm with trial site).
- People who have narcolepsy (a sleep disorder involving sudden episodes of falling asleep).
- People who lose more than 2.5 kg of additional weight during the lead-in period.
- People who do not speak English, as the study app is currently only available in English.
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Principal Investigator: Collin Popp, NYU Langone Health
Phone: 646-501-3427
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Absolute Body Weight Change; Percent Body Weight Change; Percentage of Participants with Successful Weight Loss-Maintenance (WLM); Absolute Fat Mass Change Measured with DEXA; Percent Fat Mass Change Measured with DEXA
Can't join this trial?
Data last synced from ClinicalTrials.gov: 19 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.