Why do plants produce painkillers?

Plants do not feel pain. They do not have a nervous system and even more important they do not have a brain to integrate external stimuli. Then, why do they synthesize painkillers? Ok, maybe we need to make a step back. Aspirin, morphine, codeine, and cannabinoids are all drugs with a significant analgesic effect, andContinue reading “Why do plants produce painkillers?”