Actively Recruiting
Probiotic Intervention Study
Led by University of California, Los Angeles · Updated on 2026-03-27
100
Participants Needed
1
Research Sites
210 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
The current standard of care for obesity is the optimal management of comorbid conditions such as diabetes and hyperlipidemia, and counseling on diet, weight loss, or increased physical activity programs. However, lifestyle, diet, and behavioral interventions may provide between 7-10% reduction in initial weight and even fewer with long-term weight loss. In severely obese patients (BMI\>40 or BMI\>35 with comorbidities), bariatric surgery is also a potential treatment, but there is a high barrier for patients to undergo surgery for weight loss. These barriers include an aversion to major abdominal surgery, long recovery time, potential risk of vitamin deficiency, and risk for abdominal pain. For these reasons, there is a paramount need for other treatments for obesity and for food addiction. The current standard of care for obesity and food addiction is difficult to implement and lacks sustained efficacy. Most struggle to complete treatment, lose minimal weight, lack sustained weight loss, and engage in the well-known "YoYo" diet phenomenon. While bariatric surgery is currently the only effective treatment for obesity, there are several barriers associated with it such as eligibility requirements, invasiveness, difficult recovery, and cost making it not readily available for everyone. Some approved medications that help with obesity, such as orlistat, lorcaserin, or naltrexone-bupropion, have not been widely adopted by providers or patients due to their limited responses and adverse side effects. Probiotic cocktails have shown to be safe with little to no side effects. Preclinical models of probiotics demonstrate the ability to curb obesity in animal models. Therefore, a probiotic that is able to show significant weight loss along with lifestyle modifications would be highly adopted and desirable.
CONDITIONS
Official Title
Probiotic Intervention Study
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Ages 18 to 50
- BMI between 25 and 40
- Male and female participants
- Not pregnant or nursing
You will not qualify if you...
- Type 1 (insulin dependent) diabetes or vascular disease
- Drastic weight loss of more than 10 pounds in the last 2 months
- Frequent strenuous exercise such as marathon running or heavy weight lifting
- Previous abdominal surgeries including weight loss surgery or partial/complete removal of stomach or bowel
- Untreated thyroid disease
- Neurological disease
- Major medical conditions that could put participant at risk or interfere with data collection
- Chronic pain
- Active psychiatric illness including eating disorders within the last 2 years
- Use of medications affecting hunger, satiety, or appetite
- Pregnant, lactating, or less than 6 months postpartum
- Women of childbearing potential not using birth control or planning pregnancy during the study
- Use of oral or IV antibiotics or probiotics within the last 3 months
- Heavy alcohol or drug use, or smoking more than half a pack of cigarettes per day
- Significant change in usual diet or weight loss over 10 pounds in the last 2 months
- Use of excluded medications
- Non-English speakers
- Body weight greater than 400 pounds at enrollment
- Unable to safely participate in MRI due to claustrophobia or incompatible devices
AI-Screening
AI-Powered Screening
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Trial Site Locations
Total: 1 location
1
University of California
Los Angeles, California, United States, 90095
Actively Recruiting
Research Team
A
Allison Vaughan, MPH
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
TRIPLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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