MedEvidence! Truth Behind the Data · Dr. Michael Koren

Losing Weight, Placebo Or Not

April 8, 2026·22 min·1 clip

In a blinded weight loss study, Daryl might be on a placebo, but he still benefits from weekly check-ins and nutrition advice.

1. MedEvidence, hosted in this episode by Dr. Eric Schramm, a board-certified family physician and certified principal investigator at Encore Clinical Research Group, features Daryl Thomas, a patient enrolled in a blinded weight-loss clinical study. 2. Daryl Thomas is a musician, community volunteer, and the oldest of three brothers raised in Daytona Beach, Florida, by a military father and a mother who was a Sunday school teacher; his father is a pastor. 3. The episode's central question is whether weight loss in a clinical trial is driven by the drug itself or by the behavioral support structure, given that one in four participants may be on placebo. 4. Thomas found the study after his wife saw a Jacksonville clinical research advertisement on her phone and the couple decided to pursue a weight-loss option beyond their existing exercise routine. 5. Thomas started the study at 240 pounds and had reached 218 pounds at the time of recording, a loss of 22 pounds. 6. The study is double-blinded: neither Thomas nor Dr. Schramm knows whether Thomas is receiving active study medication or a placebo. 7. Dr. Schramm explains that in weight-loss clinical research, participants in placebo arms regularly lose weight, attributing this to the structured support system — weekly clinic visits, nutritionist contact, and relationship-based accountability with staff. 8. Thomas describes his weekly visits as the best part of his week, citing warm relationships with front-desk staff and his treating physicians as a motivation to continue. 9. A nutritionist called Thomas the day before the podcast recording to discuss his diet and provide encouragement, illustrating the behavioral support component outside of clinic visits. 10. Thomas reports minor gastrointestinal discomfort after some doses that resolved by the next day; Dr. Schramm notes this could reflect a side effect of active drug or a placebo nocebo response. 11. Thomas grew up in the church, played little league baseball, and shifted to choir and band in high school, later becoming a performing musician active in his community. 12. His community ministry background directly informs his approach to clinical research: he recruits participants from his music network, including a friend he referred to the study recruiter. 13. Thomas frames research participation as altruism — individual data contributes to outcomes for thousands of patients with similar conditions, not just the individual participant. 14. He describes weight loss as a path to reducing dependence on blood pressure and other medications, and cites wanting to perform on stage with stamina and watch grandchildren grow up as personal health goals. 15. Thomas improvised a short verse on clinical research — 'Clinical research is the place to be, clinical research, you get your kneel and it sets you free' — when asked if he would write a song about his experience. 16. Dr. Schramm acknowledges Thomas's consistent positive attitude throughout the study and notes his communication about experiences has been exemplary as a clinical trial participant. 17. The episode is structured as a warm, conversational interview; the tone is personal and informal, with the physician and patient discussing a relationship built over several months. 18. Humor, religious references, and personal anecdotes are woven throughout, making this closer in style to a human-interest story than a clinical evidence review. 19. People considering clinical research participation, especially those managing weight and blood pressure medication burdens, will find Thomas's first-person account directly relevant. 20. Listeners seeking clinical outcome data, trial methodology details, or the study drug's identity will not find that information in this episode, as the trial remains blinded.

As heard by us

A weight loss study told through one patient's life and hopes.

Dr. Eric Schramm talks with Daryl Thomas about how a weight loss study became part of his life, starting with a wife who found Jacksonville clinical research on her phone and helped turn interest into a decision to look closer.

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A weight-loss study told through one family’s decision to try something different.

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