Which neurotransmitter is are the body's natural pain killer?

Endorphins are the body's natural painkillers, functioning as neurotransmitters that help reduce the perception of pain. They are released in response to stress, pain, and physical activity, binding to opioid receptors in the brain to diminish discomfort and induce feelings of pleasure or euphoria. This mechanism contributes to the body's ability to cope with pain and promotes overall well-being.