More than a quarter of a century ago, research discovered that the precursor for GLP-1 is produced in the central nervous system, with GLP-1 receptors distributed across multiple brain regions in rats, including the mesolimbic system, ventral tegmental area (VTA) and nucleus accumbens (NAc) (Merchenthaler et al., 1999)
All data are expressed as meanSEM of 5-6 rats per group
10.1016/j.clinthera.2018.04.001 62 JiaT.RaoJ.ZouL.ZhaoS.YiZ.WuB.et al (2017)
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20% higher D30 engagement from new features launched September 22, 2025 is based on a pre-post analysis from August 22 to October 24, 2025 of D30 engagement in key in-app behaviours (completing any Home Screen Task, tapping the Bank button to bank rewards for steps, viewing the Health Report, logging medication, or reading an article)
Tirzepatide remains the reference molecule for protocols that need the deepest published evidence base today