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British Medical Journal (The BMJ)Association Between Healthy Lifestyle and Memory Decline in Older Adults: 10-year, Population-based, Prospective Cohort Study

Factors evaluated were diet, exercise, social integration, cognitive activity, smoking history, and alcohol use. Participants were categorized as favorable (4-6 positive factors), average (2–3 positive factors), and unfavorable (0–1 positive factor). The “favorable” group had a a slower decline in cognition even if they were APOE e4 carriers.