New research at the University of Birmingham found cocoa drinks containing high levels of flavanols boosted participants’ cognitive performance. Flavanol is a type of plant nutrient that can be found in cocoa, tea, red wine, blueberries, apples, pears, cherries, and peanuts. The researchers attributed the improved cognitive results to increased blood oxygenation after consuming flavanol-enriched drinks, and suggested that flavanols might be particularly beneficial for tasks that are cognitively demanding.

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