What "really" causes "CRAVINGS"?

So last week . . . we ended our conversation with the 2 chemicals in the "brain" that determine HOW we "think" . . .and "act" with "FOOD"!
So let's continue . . . to better understand . . .
Now . . . we all know about . . . "overeating" . . . because it's happen to the best of us
BUT . . . did you know . . . when we eat the sugary, salty, fatty foods from this Western diet that we love so much . . . it stimulates the "brain chemical" called . . . "endorphin".
Now . . . "endorphin" signals to us . . . that we've had a "pleasurable experience" . . .
And this in turn . . . "stimulates" us to eat more of that "guilty pleeeeasurable" type of food.
You see . . . "endorphin" triggers a "positive" feeling in the body . . . very similar to that of "morphine".
So right there . . . we don't have a chance in "H___" of stopping the desire to eat more "guilty" food . . . than the body needs or can burn off.
Now . . . "endorphin" works the same for our "pain".
If we have an adequate supply in the brain . . . it has the same stimulating effect and reduces what we "feel".
This would be a person that has a "higher" tolerance for pain.
But . . . "IF" . . . you're a person that experiences a "LOT" of pain . . . you are also . . . most likely a person that "overeats" . . . and has a unbalanced level of "endorphin" in the brain.