Hundreds of clinical trials explore GLP-1 drugs like Ozempic and Mounjaro for treating conditions beyond Type 2 diabetes, weight management, and cardiovascular disease, including anxiety, depression, Alzheimer's, Parkinson's, arthritis, kidney disease, and cancer. Promising late-stage trials have led to FDA review applications for Ozempic for kidney disease and Zepbound for sleep apnea. Research driven by GLP-1's role in insulin release, appetite suppression, and inflammation reduction suggests broad therapeutic potential, though mechanisms in the brain remain unclear.