Appetite is more complex than an on-off switch or a scalar variable can describe. You can be painfully full but still "hungry" for some nutrient your body need

Appetite is more complex than an on-off switch or a scalar variable can describe. You can be painfully full but still "hungry" for some nutrient your body needs. This was me, driving from one fast food place to another to another. But when I instead filled my belly with dense nutrition, the need to binge went away. It was not, as I had been told over and over, just psychological. For me it was about curing the malnutrition that was making me continually unsatiated.