Yes, cocoa has so many beneficial properties, the main one in my opinion being the cardio-vascular protection bestowed by the compound called (-)-epicatechin (high in untreated/undutched cacao powders)..
On top of that, it emanates sattvic vibrations, in drinks prepared with water, unprocessed cacao powder, vanilla, a little milk, honey or eritritol.
Recently i made the determination to quit caffeine in coffee completely as a more or less experiment with Yogananda's teachings to eliminate caffeine to increase memory. It appears to me from the comments mccoy has made that cocoa has enough beneficial qualities to not consider deleting it from my diet, besides it is not something i indulge in constantly to be a factor of concern for me. I'm not a scientist so I'm not embarked on an empirical study. i believe there are other variables that a scientist may not even warrant being factors that could confound such studies. As an example; current astrological transits of planets. I will say this though recently i have had many clear experiences of my teen age years. And my attempts to understand my own behaviors and how they arose. As spiritual aspirants from previous incarnations we may have found ourselves questioning a lot of things including the training or educational experiences we were getting at an early age. In hindsight, they were not ideal in any sense of the word, nor were my reactions to them.