A study from Boston University has examined the eating habits of people whose parents lived to 100, offering insights into the dietary patterns that may contribute to exceptional longevity. The research, published in the journal JAMA Network Open, analyzed food questionnaires from 457 older adults enrolled in the New England Centenarian Study, one of the largest investigations of long-lived families. Most participants were adult children of centenarians, with an average age in their mid-seventies when they reported their diets in 2005.
The findings show that these individuals had moderate overall diet quality, scoring higher than comparable groups of older Americans across four recognized diet measures linked to general health, chronic disease prevention, brain health, and environmental sustainability. Their diets were strongest in fruits, vegetables, greens, beans, seafood, and less processed meats. They also tended to limit sodium, added sugar, and refined grains effectively.
Key Nutritional Gaps
Despite these strengths, the centenarian offspring did not meet recommended intake levels for several foods widely endorsed by health authorities such as the World Health Organization. These include whole grains, legumes, soy foods, and nuts. Diets rich in these items are known to reduce the risk of chronic diseases like heart disease and diabetes.
Researchers caution that the results do not prove diet alone causes longer life. The study is observational and based on self-reported diet at a single point in time. The group was also highly educated and predominantly white, limiting how broadly the findings can be applied. Education emerged as a clear influence on diet quality, with higher education levels correlating with healthier scores across all diet indices.
“The findings point to a need for better nutrition education for older adults, including skills such as reading food labels and cooking, along with more targeted approaches for men and women,” the authors wrote. They also urged policymakers to improve the affordability and availability of foods like whole grains and legumes.
Across Europe, life expectancy averages 81.7 years, according to 2024 data, with Italy and Sweden both at 84.1 years, and Spain at 84.0 years. In contrast, Bulgaria (75.9 years), Romania (76.6 years), and Latvia (76.7 years) have the lowest life expectancies on the continent. These disparities highlight the potential for dietary improvements to close health gaps, as seen in the study’s emphasis on whole grains and legumes—staples of the Mediterranean diet, which is common in southern Europe.
The study’s findings resonate with broader European health trends. For instance, climate change and air pollution are driving rising stroke risk, a condition that diet can help mitigate. Similarly, the focus on nutrition education aligns with ongoing EU efforts to promote healthy aging, such as the EU’s free age verification app to protect children online, though that targets a different demographic.
While the study is US-based, its implications for Europe are clear: even among families with genetic advantages, diet quality matters, and public health measures can help bridge the gap between current intake and recommended levels. As European populations age, ensuring access to nutritious foods and education could be key to extending healthy lifespans.
