Lexi Nelson looks on as her grandfather Richard, who has Alzheimer’s disease, talks to her mother Wendy at his home in Foxborough, Massachusetts, U.S., March 21, 2023. Lexi Nelson’s grandmother, Wendy Nelson’s mother and Richard Webber’s wife Pamela died from Alzheimer’s disease, and genetic tests show that Wendy carries two APOE4 gene variants, and her three daughters each carry one APOE4 gene variant, indicating an increased risk of Alzheimer’s disease. REUTERS/Brian Snyder