Exo ( exogenous ) + endorphins ( endogenous moprphins ):
exorphins are the brain's opiates that's found in food, outside the body -- maily in gluten-rich wheat and dairy-products. They contain opioid peptides-influencing endorphin-receptors. These peptides are physically addictive, causing dependence, asthma, obesity, apathy, ignorance and numbness.
'Zombie food', is food high in exorphins that are responisble for food addiction and compulsive eating.