By watching this video, you can learn about the different innate reward systems and how these reward systems are hijacked by drug overuse. Timeline: 00:00 causes of drug addiction 00:53 innate reward systems 01:49 dopaminergic reward pathway 02:33 opioid reward pathways 03:01 how is the reward system hijacked? 04:18 self-medicating with plant compounds 05:00 genetics 06:05 summary