I confess I have such a sweet tooth 
So I need to justify what I eat
The Nourishing Value of Chocolate
A piece of dark chocolate with 70% cocoa (the best chocolate in my opinion) contains per 100gr, 9gr of protein, 40gr lipids and 14gr of vegetable fibers. Therefore and beyond any doubt chocolate is an important source of vegetable proteins and fibers that are necessary for the human organism.
Cooking chocolate is rich in magnesium, potassium and phosphorus. Plain cooking chocolate contains 520 calories per 100gr.
We have connected chocolate with enjoyment. Hence, it does not hurt to consume it in sensible portions and good quality. If however health problems, like sugar diabetes, exist one needs to be careful. Chocolate also has therapeutic properties, for example it alleviates headaches. Latest research findings proved that chocolate is good for the heart (always in sensible quantities). It is an antidepressant. No matter what the reason for not feeling well, psychologically, a bar of chocolate will make us feel better.
Chocolate is considered by many as an aphrodisiac and a stimulant. History mentions that Napoleon A’ consumed great quantities of chocolate on his missions of war. The effect of chocolate on libido is ambiguous. Maya stories report that the bishop Diego de Panda, personal priest of Cortez, supported that 10 grains of chocolate were enough for a whole night of enjoyment with a courtesan.