my comment was more just about 'chocholic' being a funny term, since 'chocohol' doesn't exist.
Since you brought it up though, it seems that just about everything is addictive, largely because of dopamine.
https://www.weeklystandard.com/blogs/sa ... 54703.html
I would venture to say that dopamine is a more powerful drug than heroin, and its produced by our bodies. Chocolate, coffee, cigarettes, Doritos, and even just a little beer (http://io9.com/just-one-sip-of-beer-can ... -473037919) trigger dopamine to be released.
There is a fine line between 'need' and 'want'. And a habit, and a HABIT.