Methamphetamine, commonly known as meth, is one of the most destructive drugs in modern society. It hijacks the brain's reward system, leading to intense euphoria followed by crippling addiction. While much attention focuses on dopamine pathways in the nucleus accumbens, a lesser-discussed player—the hippocampus—plays a critical role in why meth addiction is so hard to break. This seahorse-shaped structure in the medial temporal lobe isn't just for forming memories; in additi