I've abused cacao. Same as sugar or any other addictive substance. It hits you. You get high. It's like speed. I used it for a period. It also makes me feel ill and my body hates it.

Only anyone with my addictive genes would eat the quantity of it perhaps to have those effects(it's very bitter alone and raw which is how I took it) but I would certainly warn anyone off using or abusing cacao or even 95% dark chocolate.