Because your body is not just meant to shrink
For the small group and individual market there may be coverage by some insurers but not others meaning that the percentage of enrollees in that segment that have access to the drug may not be particularly high
New England Journal of Medicine 2023 03 Retatrutide, a GIP, GLP-1 and glucagon receptor agonist, for people with type 2 diabetes: a randomised, double-blind, placebo and active-controlled, parallel-group, phase 2 trial Rosenstock J, Frias J, Jastreboff AM, et al
Provides simple carbs for energy when protein is impossible
Obesity Strategies: What Can Be Done, Centers for Disease Control and Prevention, October 29, 2024, [188]