Study Uncovers Diet Patterns Linked to Longer, Healthier Lives
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A 30-year study has found that plant-rich diets with low intake of ultra-processed foods significantly increase the odds of healthy aging. The study links midlife dietary patterns to a greater likelihood of aging well—defined as living beyond 70 without major chronic diseases, while maintaining cognitive, physical, and mental health. The findings will be published in Nature Medicine.
Drawing from data in the Nurses’ Health Study and the Health Professionals Follow-Up Study, researchers followed more than 105,000 men and women aged 39–69 for three decades. Participants regularly completed dietary questionnaires, which were evaluated using eight well-established dietary indices, including the Alternative Healthy Eating Index (AHEI), Alternative Mediterranean Index (aMED), and Planetary Health Diet Index (PHDI). Each of these patterns emphasizes high intake of fruits, vegetables, whole grains, nuts, legumes, and healthy fats, with low to moderate amounts of healthy animal-based foods such as fish and dairy.
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