GLP-1 agonists like Ozempic impact brain function, potentially reducing food noise, slowing brain aging, aiding addiction recovery, and affecting mental health. Research suggests these drugs may lower risks of dementia and Parkinson's, improve insulin signaling in the brain, and reduce cravings by acting on brain receptors. However, effects on mental health vary, with some reporting improved symptoms and others experiencing increased depression or anxiety. Fatigue and brain fog are noted side effects, possibly linked to reduced calorie intake and blood sugar levels.