How Cocaine Affects the Brain: Dopamine System Hijack Explained | Dr. Ferghal Armstrong & MedHeads

How Cocaine Affects the Brain: Dopamine System Hijack Explained | Dr. Ferghal Armstrong & MedHeads What exactly does cocaine do to your brain—and why is it so addictive? In this episode, Dr. Ferghal Armstrong joins MedHeads to reveal how cocaine hijacks your dopamine system, the critical pathway behind reward, motivation, and addiction. Whether you're a student of neuroscience, a healthcare professional, or simply curious about the science of addiction, this is your ultimate starting point. Inside this video: -How cocaine (including hydrochloride, freebase, and crack) floods your brain with dopamine by blocking dopamine transporters -The initial euphoria—and the long-term consequences of this artificial high -Cocaine’s effects on the mesolimbic system (reward & reinforcement) and mesocortical system (decision-making & impulse control) -How it amplifies norepinephrine, increasing heart rate, blood pressure, and the risk of heart attacks or strokes -The science behind addiction—and how recovery is possible -This is more than just brain chemistry—it’s about understanding the real risks, real consequences, and the hope for recovery. -Subscribe to MedHeads for more expert-led, bite-sized medical science content. Chapters 00:00:00 Introduction and Overview 00:00:44 Cocaine and the Dopamine System 00:01:25 Mechanism of Action: Dopamine Transporter (DAT) Blockage 00:02:24 Neurotransmitter Spillover: Serotonin and Norepinephrine 00:03:33 Cocaine's Effects on Reward Pathway 00:04:16 Role of the Nucleus Accumbens and Amygdala 00:05:21 Hippocampus and Memory Formation 00:06:17 Decision Making and Impulse Control: Mesocortical System 00:07:02 Motor System and Nigrostriatal Pathway 00:07:54 Stress and Arousal: Hypothalamus 00:08:00 Conclusion