Actually it was from the health food store and it contained raw bamboo sugar (I think it's the same as brown sugar) but sugar is sugar. I agree that chocolate bars are processed, heated so as with meat some toxic byproducts are created. But raw cacao beans. I really want to get my hand on them for some time. I can't make my high-meat at home to boost my mood like Tyler said.
I am not sure if I remember it right but some aztecs or mayans drank about 30 cups of chocolate a day. I don't think they would have embraced it if it made them sick later.
You could get the raw beans by mail order. I tried them before, but they were not really tasty, so I ended up throwing them away. I also wonder about anti-nutrients in them, as they are technically legumes.
About the high meat, how about hiding a jar somewhere outside and airing it every day?
Another question is, why do you need something to boost your mood? If you find the answer to that, you may come up with a better solution than eating chocolate.