by Mass General Brigham Unsplash/CC0 Public DomainBy 2060, according to the Alzheimer’s Association, nearly one in four Americans will be in an age bracket at elevated risk of cognitive decline and Alzheimer’s disease unless interventions can help preserve cognitive function before deficits begin. The COcoa Supplement and Multivitamin Outcomes Study (COSMOS) is a large-scale, nationwide, randomized...