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04Switch From Semaglutide to Tirzepatide Without Starting Over Many GLP-1 users do not stay on the first medication forever
Early signs point to GLP-1 drugs flipping this effect on its head
The important comparison is structure
This is why following dosage recommendations is so important
Potential protective mechanisms of GLP-1 RAs in AS are summarised in Fig
GLP-1 Receptor Pathway - Reduces hunger drive centrally (hypothalamus, brainstem) - Decreases the reward value of food (mesolimbic system) - Enhances glucose-dependent insulin secretion - Slows gastric emptying Amylin Receptor Pathway - Induces satiety through the area postrema and NTS - Activates POMC neurons (pro-satiety) and suppresses NPY/AgRP neurons (pro-hunger) in the arcuate nucleus - Additional gastric emptying delay through distinct neural circuits - Suppresses post-prandial glucagon secretion - May contribute to leptin resensitization The combination of these two pathways produces what researchers describe as broader modulation of neuroendocrine appetite control meaning amycretin hits more of the biological switches that drive eating behavior than a GLP-1-only drug can reach
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