There are many types of hair loss, but the two most commonly impacted by nutrition are: Telogen effluvium: Normally, 80% of hair follicles are in the anagen (growing) phase
GLP-1 Maintenance BMI Cut-Off (UK) What Is the BMI Cut-Off for GLP-1 Maintenance
But the reason its so beneficial for folks on GLP-1s is that weight loss is a really common side effect of these drugs
For example, semaglutide can cause problems in the stomach and esophagus, like acid reflux or bloating
Brain Res 1623:166173 Holfeld J, Tepekoylu C, Blunder S, Lobenwein D, Kirchmair E, Dietl M, Kozaryn R, Lener D, Theurl M, Paulus P et al (2014) Low energy shock wave therapy induces angiogenesis in acute hind-limb ischemia via VEGF receptor 2 phosphorylation