Long-term drug use damages the brain's decision-making center.

The front part of your brain is called the prefrontal cortex. Think of it as the adult in the room. It helps you make plans, weigh risks, and say 'no' to bad ideas. Brain scans show that long-term drug use damages this exact area. It is like cutting the brake lines on a car. The person using the drug might want to stop, but their brain can no longer send the 'stop' signal. The connection between thinking a choice is bad and actually stopping yourself is physically broken.