84 Participants Needed

Weight Loss for Obesity

JG
Overseen ByJared Greiner, MS
Age: 18+
Sex: Any
Trial Phase: Academic
Sponsor: University of Colorado, Boulder
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)

What You Need to Know Before You Apply

What is the purpose of this trial?

Changes in adipose tissue biology are now recognized as a key factor underlying the increased risk of metabolic and cardiovascular disease with obesity. Clinical interest in adipocyte-derived extracellular vesicles (Ad-EVs) has intensified due to their potential as circulating biomarkers of adipose tissue health and systemic messengers, regulators and mediators of cardiometabolic health and disease with obesity.The investigators hypothesize that elevated Ad-EVs in adults with obesity will be negatively associated with endothelium-dependent vasodilation. Furthermore, the investigators hypothesize that in adults with obesity, intentional weight loss-induced reduction in circulating Ad-EVs is associated with greater endothelium-dependent vasodilation.

Will I have to stop taking my current medications?

The trial requires that you stop taking blood thinners, clotting medications, and statin medications if you are currently on them.

Is the weight loss treatment generally safe for humans?

Some weight loss medications have been linked to serious side effects, including heart and kidney problems, and have been withdrawn from the market due to safety concerns. Dietary supplements for weight loss often lack rigorous testing and regulatory oversight, which means their safety is not well-established. It's important to monitor the safety of these treatments continuously.12345

How does the weight loss treatment for obesity differ from other treatments?

This weight loss treatment for obesity is unique because it emphasizes a combination of caloric restriction, nutritional education, exercise, behavioral modification, and ongoing support, rather than relying solely on medication or surgery. It focuses on achieving a healthier weight rather than an ideal weight, and aims to maintain weight loss through lifestyle changes and support.678910

What data supports the effectiveness of the weight loss treatment for obesity?

Surgical weight loss treatments have been shown to improve obesity-related health problems and quality of life, although the long-term sustainability of weight loss and its effects on health are still being studied. Surgery is currently considered the most effective option for significant weight loss in people with severe obesity.1112131415

Who Is on the Research Team?

CD

Christopher DeSouza, PhD

Principal Investigator

University of Colorado, Boulder

Are You a Good Fit for This Trial?

This trial is for adults with obesity who are interested in losing weight without using drugs. The study focuses on how fat cells communicate and influence heart health during weight loss.

Inclusion Criteria

BMI >25 kg/m2 for Phase 2. Rationale for defining obesity as BMI >25 kg/m2
I am 40 years old or older.
My BMI is under 25.
See 1 more

Exclusion Criteria

My blood pressure is very high (>160/100 mmHg).
I am not pregnant or breastfeeding.
Current smoker
See 9 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Phase 1

Cross-sectional study to compare circulating Ad-EVs association with obesity-related endothelial dysfunction

2 weeks
2 visits (in-person)

Phase 2

Intervention study to determine effects of 12-week weight loss on circulating Ad-EVs and endothelium-dependent vasodilation

12 weeks
15 visits (in-person)

Follow-up

Participants are monitored for safety and effectiveness after treatment

4 weeks

What Are the Treatments Tested in This Trial?

Interventions

  • Weight loss
Trial Overview The study looks at the effects of intentional weight loss on tiny particles released by fat cells, called Ad-EVs, and their relationship to blood vessel function.
How Is the Trial Designed?
2Treatment groups
Experimental Treatment
Active Control
Group I: Experimental: Phase 2Experimental Treatment1 Intervention
Group II: No Intervention: Phase 1Active Control1 Intervention

Find a Clinic Near You

Who Is Running the Clinical Trial?

University of Colorado, Boulder

Lead Sponsor

Trials
128
Recruited
29,600+

Published Research Related to This Trial

Patients in an academic obesity unit had unrealistic weight loss expectations, with women expecting to lose up to 42% and men 29% of their body weight, despite a median BMI of 40.7 kg/m².
Recognizing gender differences in weight loss expectations is crucial for developing effective obesity treatment programs, and setting realistic goals early on can improve patient compliance.
Patient expectations of obesity treatment-the experience from a day-care unit.Linné, Y., Hemmingsson, E., Adolfsson, B., et al.[2015]
In a study of 47 patients who underwent videolaparoscopic sleeve gastrectomy, the average percentage of excess weight loss was 85.46%, indicating significant weight reduction post-surgery.
Quality of life improvements were substantial, with 76.6% of patients reporting excellent to good outcomes on the BAROS questionnaire, and all investigated comorbidities showed clinical improvement after the procedure.
QUALITY OF LIFE AFTER VERTICAL GASTRECTOMY EVALUATED BY THE BAROS QUESTIONNAIRE.Vargas, GP., Mendes, GA., Pinto, RD.[2022]
In a study analyzing data from 34 surgical practices, it was found that considering patients lost to follow-up as treatment failures does not accurately reflect the effectiveness of obesity surgery, as only 61% of patients returned for one-year follow-up.
Using two different methods to define success, the study showed that 67% of patients who were followed achieved at least a 50% excess weight loss, indicating that follow-up rates do not correlate with actual treatment success.
The Effect of Follow-up on Reporting Success for Obesity Surgery.Renquist, KE., Cullen, JJ., Barnes, D., et al.[2019]

Citations

Patient expectations of obesity treatment-the experience from a day-care unit. [2015]
QUALITY OF LIFE AFTER VERTICAL GASTRECTOMY EVALUATED BY THE BAROS QUESTIONNAIRE. [2022]
The Effect of Follow-up on Reporting Success for Obesity Surgery. [2019]
Results of obesity surgery. [2005]
Obese patients' perceptions of treatment outcomes and the factors that influence them. [2022]
Dietary supplements and alternative therapies for obesity: A Perspective from The Obesity Society's Clinical Committee. [2021]
Post-marketing withdrawal of anti-obesity medicinal products because of adverse drug reactions: a systematic review. [2022]
Suspected adverse reactions associated with herbal products used for weight loss: spontaneous reports from the Italian Phytovigilance System. [2021]
Benefit-risk paradigm for clinical trial design of obesity devices: FDA proposal. [2021]
Descriptive analysis of reported adverse events associated with anti-obesity medications using FDA Adverse Event Reporting System (FAERS) databases 2013-2020. [2022]
11.United Statespubmed.ncbi.nlm.nih.gov
Medical management of obesity. [2005]
12.United Statespubmed.ncbi.nlm.nih.gov
Treatment of obesity by moderate and severe caloric restriction. Results of clinical research trials. [2019]
Obesity--what are the current treatment options? [2016]
Obesity: weight loss without drugs: a balanced diet avoiding high-calorie foods, plus exercise. [2007]
Behavioural treatment of the overweight patient. [2019]
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