We can't be full of canabinoid receptors for nothing.
Isn't all honey basicly medacine? Propalus used to be the base for a lot of pharmasceuticals, or so the pathologist honey farmer told me.
Likely a good reason for those too. Not a good comparison though once you look into it. We have receptors for anything that alters your consciousness, basicly. If it makes you high, you have receptors for it.
Receptors are not canabinoids. We produce our own morphine.