> If it was that simple, why didn't the human body just evolve to excrete GLP-1 agonists? Or modify GLP-1 itself?
Replace "GLP-1" with any of: aircraft, computers, buildings, WiFi, ...
Some things are easy for nature to find and some things aren't!
And even of the things that are easy for nature to find, and that we would have found useful even in the environment of evolutionary adaptation, they might not confer overall fitness if they are too costly.
Replace "GLP-1" with any of: aircraft, computers, buildings, WiFi, ...
Some things are easy for nature to find and some things aren't!
And even of the things that are easy for nature to find, and that we would have found useful even in the environment of evolutionary adaptation, they might not confer overall fitness if they are too costly.