Cacao is loaded with iron and magnesium. Cacao is the highest plant-based source of iron known to man, at a whopping 7.3mg per 100g.  This compares to beef at 2.5mg, and spinach at 3.6mg.  
 
Raw cacao is also one of the highest plant-based sources of magnesium, the most deficient mineral in the Western world.  Magnesium is important for a healthy heart and helps turn glucose into energy enabling your brain to work with laser-sharp clarity and focus.  This might just be the reason your body craves cacao when you're pulling an all-nighter! Last but not least, cacao contains more calcium than regular cow's milk. Cacao has 160mg per 100g vs only 125mg per 100ml of milk.
 
Cacao is also a great source to help combat depression. Cacao is a great source of four scientifically proven bliss chemicals – serotonin, tryptophan, tyrosine and phenylethylamine.  These neurotransmitters are associated with cosy feelings of wellbeing, happiness, and can even alleviate depression.