The powder participants ate was equivalent to about 16 large or 24 medium strawberries, about two servings1, says Maggie Moon, R.D., a brain health nutrition expert and author of The MIND Diet. Moon adds that the findings could be extrapolated to eating whole strawberries because “it’s likely that it’s the polyphenols in strawberries that promote memory and cognition brain health benefits, and the levels aren’t that different in fresh versus freeze-dried berries.”