Table 1.

PICOS criteria for inclusion and exclusion of studies.

Parameter	Description
Population	Adult or old subjects with healthy cognition or mild cognitive impairment
Intervention	Whole Berries/Berry-based Food/Berry Extract/Berry Supplement
Comparator	Any comparator
Outcomes	Outcomes regarding at least one of the following indices: episodic memory, long-term memory, short-term memory, working memory, executive function, psychomotor reaction time, attention
Study design	Randomized controlled clinical trial with a crossover or parallel design