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Nuts contain a variety of potentially healthful nutrients. To determine whether nut consumption is associated with longer life, researchers analyzed data from two prospective American cohort studies with 30 years of follow-up — the Nurses' Health Study (76,000 women) and the Health Professionals Follow-up Study (42,000 men). Cumulative long-term nut consumption was calculated from food-frequency questionnaires that participants returned every few years.
In both men and women, nut consumption was associated significantly with lower total mortality after extensive adjustment for potentially confounding variables. Compared with no nut consumption, nut consumption less than once weekly, once weekly, 2 to 4 times weekly, 5 to 6 times weekly, and …