Hormonal
Higher baseline circulating leptin levels in patients correlate with greater weight loss efficacy when treated with tirzepatide.
If you have obesity and type 2 diabetes, your baseline leptin level may predict how much weight you will lose with tirzepatide. Higher leptin levels are associated with greater weight loss, suggesting that combination therapy with leptin might be particularly beneficial for those with higher baseline levels.
Our tirzepatide clinical trial revealed that circulating leptin levels at baseline correlated with weight loss efficacy in patients with obesity, suggesting leptin and tirzepatide could interact to achieve stronger effects on weight loss.
Why this rating
Based on a phase 2b clinical trial with 318 participants, providing strong human data.
Source
Tirzepatide Synergizes with Leptin on Weight Loss and Restoring Metabolic Homeostasis in Diet-induced Obesity Model
Xun Sun et al. · bioRxiv (Cold Spring Harbor Laboratory) · 2025
DOI 10.64898/2025.12.18.695152
More from this paper
- Tirzepatide sensitizes leptin signaling in hypothalamic POMC and GLP-1R neurons, increasing POMC neuronal firing by decreasing inhibitory postsynaptic input.Strong
- Combining tirzepatide with leptin produces synergistic weight loss and improved metabolic homeostasis in diet-induced obesity models, driven by reduced food intake and increased energy expenditure.Good
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