The Science of Nicotine Addiction — How Your Brain Gets Hooked. Discover why quitting smoking feels so hard — it’s biology, not weakness. This reel breaks down how nicotine reaches your brain in 10 seconds, triggers dopamine, builds tolerance, and causes withdrawal — then shows how recovery and healing begin once you quit. Perfect for anyone trying to quit smoking or support a loved one. Packed with clear science, hope, and practical insight on cravings, dopamine, and smoke-free recovery. Like a

Nicotine dependence - Symptoms and causes