Intensive weight loss program aims to transform care for severe obesity
NCT ID NCT06321458
First seen Jun 27, 2026 · Last updated Aug 25, 2026 · Updated 2 times
Summary
This study compares an intensive weight loss program—including meal replacements, behavioral support, and weight-loss medication—against standard care for adults with severe and complex obesity. The goal is to see if the intensive approach leads to better health outcomes and is cost-effective. 600 participants aged 18-60 with a BMI over 35 (or slightly lower for certain ethnic groups) and related health issues like heart disease or diabetes are being recruited.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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605 people
The number who actually took part.
- Started
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Apr 2024
- Expected to finish
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Dec 2048
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 60 years
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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.
Please note that participants need to be invited in order to take part in the trial Inclusion Criteria: 1. Age ≥18 years and ≤60 years old at screening. 2. Has severe and complex obesity i.e. BMI\>35 or \>32.5 in people with South Asian, Chinese, other Asian, Middle Eastern, Black African or African-Caribbean family backgrounds and with one or more of these specific adiposity-related chronic diseases of cardiovascular disease, type 2 diabetes, hypertension, non-alcoholic steatosis, or sleep apnoea. 3. Provides informed consent. Exclusion Criteria: 1. Intending to become pregnant in the next two years or pregnant or breastfeeding. 2. Use of WLM or GLP-1 agonist treatment within the last three months. 3. Currently being treated for cancer other than oestrogen antagonist therapy or non-melanoma skin cancer. 4. Prior bariatric surgery, not including laparoscopic gastric banding, intragastric balloons or duodenal-jejunal bypass sleeve (Endobarrier™ or similar) if the device has been removed \>1 year before screening. 5. Diagnosis of or treatment for severe eating disorder within the last 6 months. 6. Any other disease that markedly compromises the participant's ability to adhere to the treatment programme or follow-up or is likely to mean that weight loss will not improve the person's length or quality of life, such as conditions limiting life expectancy. 7. Conditions that contraindicate or complicate TDR (including type 1 diabetes or other diabetes requiring insulin therapy, phenylketonuria, or other conditions requiring special diets). 8. Conditions that contraindicate or complicate GLP-1 treatment (including history of pancreatitis) 9. Taking part in other research involving multidisciplinary obesity treatment would compromise participation in this trial. 10. Another member of the household enrolled in the trial.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Cwm Taf Morgannwg University Health Board
Abercynon, United Kingdom
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Frederiksberg kommune: Social-, Sundheds- og Arbejdsmarkedsområdet
Frederiksberg, 2000, Denmark
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Gladsaxe kommune: Social- og Sundhedsforvaltningen, Sundhed og Rehabilitering
Søborg, 2860, Denmark
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Hvidovre kommune: Center for Sundhed og Ældre, Hvidovre Sundhedscenter, Sundhed og Forebyggelse
Hvidovre, 2650, Denmark
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Powys Teaching Health Board
Powys, United Kingdom
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Royal Wolverhampton NHS Trust
Wolverhampton, United Kingdom
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South Central RRDN
Southampton, United Kingdom
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South West Peninsula RRDN
Plymouth, United Kingdom
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The Department of Medicine and the Gastro Unit, Copenhagen University Hospital - Amager and Hvidovre
Hvidovre, 2650, Denmark
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The Parker Institute, Copenhagen University Hospital - Bispebjerg and Frederiksberg
Frederiksberg, 2000, Denmark
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Torbay and South Devon NHS Trust
Torquay, United Kingdom
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University Hospitals Birmingham NHS Foundation Trust
Birmingham, United Kingdom
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University Hospitals of Derby and Burton NHS Foundation Trust
Derby, United Kingdom
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Yorkshire and Humber RRDN (Leeds, Sheffield and Hull)
Leeds, United Kingdom
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