Summary: Researchers shed light on the dual nature of dopamine, as a neurotransmitter that makes us seek pleasure and also reinforces avoidance of pain. Source: UC Berkeley. For decades, psychologists have viewed the neurotransmitter dopamine as a double-edged sword: released in the brain as a reward to train us to seek out pleasurable experiences, but also a “drug” the constant pursuit of which leads to addiction.

Source: Dopamine’s Yin-Yang Personality: It’s an Upper and a Downer

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