People who followed healthier eating patterns in midlife were more likely to reach 70 without major chronic illness and with better physical, mental and cognitive health in a study published in Nature Medicine in March 2025.
Researchers examined 105,015 participants in the Nurses’ Health Study and Health Professionals Follow-Up Study over as long as 30 years. Their definition of healthy aging was demanding: 9,771 participants, or 9.3 percent, met all its conditions.
Eight dietary patterns were assessed. Greater adherence to each was associated with higher odds of healthy aging. Comparing the highest and lowest fifths, the adjusted odds ratios ranged from 1.45 to 1.86. Those are odds comparisons within these cohorts, not a promise that a particular diet will increase an individual’s chance by the same percentage.
The patterns differed, but common features included fruits, vegetables, whole grains, nuts, legumes and unsaturated fats. The results favor an overall eating pattern rather than a claim that one food prevents aging.
Participants were health professionals, and diet was reported through questionnaires. Although researchers accounted for several other factors, remaining differences in health, circumstances and habits could affect the association. This was not a randomized dietary trial.
For someone planning ordinary meals, the variety of patterns is a useful point. The result does not require every reader to choose the same named diet or buy a specialized product. A hypothetical household could compare its usual week of meals and identify a change that fits its budget, preferences and medical needs.
The study’s outcome also goes beyond merely reaching a birthday. It includes function and well-being. That makes it relevant to how people want to live in their seventies, while leaving the limits of the evidence intact: a favorable association over time is not an individual forecast.
