Would losing 100 lbs improve how your knees feel? It could help a little, but I doubt it beats what GLPs do. My knee issues showed up when I weighed quite a bit less and trained way more, that's my genetic lottery. Sema has nearly wiped out that pain, though there's still plenty left to lose. Did anyone design them for pain relief? Depends how you look at it. A trial targeting both weight loss and knee arthritis is underway with Reta. They started out to manage blood sugar first and later work moved toward obesity, and the anti-inflammatory effects help quite a bit. One survey said 1 in 8 Americans are taking a GLP-1 currently, though I'm not sure how accurate that figure is. Either way plenty of people use them, whether through prescriptions or other channels.