Beta-Endorphin and Endogenous Opioids

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Beta-Endorphin and Endogenous OpioidsGuide

Beta-Endorphin: The Runner's High Peptide

Beta-endorphin is a 31-amino acid opioid peptide that modulates pain, mood, reward, and immune function. Here is what the research shows about its biology.

18 min read|Mar 20, 2026

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Beta-Endorphin and Endogenous Opioids

Endorphins, Enkephalins, and Dynorphins Explained

Three families of endogenous opioid peptides control pain, mood, and reward. Learn how endorphins, enkephalins, and dynorphins differ in structure and function.

16 min read|Mar 21, 2026