🚨 Real-World GLP-1 Data: Vanderbilt Obesity Clinic Study (n=2,306)
Clinical trials showed 15–21% weight loss with semaglutide & tirzepatide. But how do patients actually fare in practice?
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Key Findings:
📊 Median treatment duration: 10.7 months (50% discontinued by 12 months)
💉 Only 23% reached semaglutide 2.4 mg, 28% reached tirzepatide 15 mg
⚖️ Weight loss for those who continued treatment:
• 6 months: –9.4%
• 12 months: –14.4%
🏥 13.6% had medication-related ER visits (mostly GI side effects)
Context:
This was not a typical setting—patients had multidisciplinary support and NO-COST medication access through employer insurance bundles.
Reality Check:
✅ With the right care model, real-world outcomes can approach RCTs
❌ Most patients never reach target doses
❌ Half stop treatment within a year
1⃣ Insurance navigation
Most clinics lack the workflows and staff necessary to obtain prior authorizations efficiently.
Even though >50% of their patients (modest estimate) could qualify for these medications, they can only push through a handful of approvals because:
🔹Prior auth processes are slow and fragmented
🔹There’s little reimbursement to justify hiring dedicated support pmc.ncbi.nlm.nih.gov/articles/PMC11…
2⃣ Clinical infrastructure
These aren’t “set-and-forget” drugs. Patients often need:
🔹Slower titration schedules
🔹Dose adjustments
🔹Ongoing counseling & support
🔹Side-effect management (remember: >50% of users experience side effects)
1/ WHAT YOU NEED TO KNOW ABOUT THE QUALITY OF WEIGHT LOSS. 🧵
2/ When you lose weight, you don’t just lose from fat but also from other body compartments, including lean tissues.
3/ Why should you care about where the weight comes from?
Excess loss from specific lean tissues is associated with many adverse health outcomes: reduced QoL, osteoporosis, sarcopenia/frailty, decreased ability to perform ADLs, etc.
2/ Simply, yes. And it is a concern any time you lose significant wt. I would remind people that human outcomes are the most informative, as physical functioning scores and QoL improved in STEP trials & SURMOUNT-1. However, the LT health impacts of LM loss need to be monitored.
3/ Fortunately, we have some high-quality data from Lundgren et al., 2021.
👉Structured Exercise + Liraglutide (GLP-1RA) led to FM loss and LM gain.
1/ Merry 🧵-mas
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WHY DECADES OF "EAT LESS AND MOVE MORE" WAS TERRIBLE ADVICE
For starters, remember semaglutide? How could you not? Journalists have written 1000+ celebrity weight loss stories on it.
2/ If you're familiar with semaglutide, you may know it is FDA-approved for treating obesity and chronic weight management under the brand name "WE-GOVY."
3/ Our story begins with the STEP Trials, a slate of phase 3 clinical trials that served as clinical validity for a novel drug platform for obesity.
Pts w/ F2 or F3 fibrosis, SEMA 0.4 mg SQ Q at 0.4 mg was superior to placebo for resolution of NASH w/o worsening of fibrosis after 72 wks of tx, with 59% of the pts in the 0.4-mg group having a response, as compared with 17%. (OR, 6.87; 95% CI, 2.60 to 17.63; P<0.001)