# Ten Diets Linked to Slower Biological Aging, Study Finds

> New research from Germany indicates that various healthy eating patterns, not just one, can slow biological aging.

By PrimaryBrief newsroom · Published 2026-10-21T13:56:38.247416Z
Canonical: https://primarybrief.com/article/ten-diets-linked-to-slower-biological-aging-study-finds-2d415b47

On September 15, 2026, a study by the German Center for Neurodegenerative Diseases (DZNE) announced that ten distinct healthy dietary patterns are linked to slower biological aging, challenging the notion of a single optimal anti-aging diet [1][6][14]. The research, published in *Nature Communications*, involved approximately 7,500 participants [1][6][9][13].

This finding is significant because it provides flexibility for individuals seeking to improve their health and potentially extend their lifespan without adhering to a rigid eating plan [6][10]. The results suggest that personal preferences, cultural background, and budget can all factor into choosing an effective healthy diet [6][7][10].

## What the records show
The comprehensive study by the DZNE examined various well-regarded healthy eating patterns, including the Mediterranean diet, Nordic diet, several plant-based diets, the DASH (Dietary Approaches to Stop Hypertension) diet, and the MIND diet [6][9][11]. Adherence to each pattern was measured by a scoring system reflecting how closely participants' food choices aligned with diet recommendations [6].

Biological aging was assessed through "DNA methylation patterns," which are chemical modifications in DNA that change systematically over a person's lifetime and influence gene activity [1][7][13]. These molecular markers serve as indicators of biological age [7][13]. Researchers analyzed about 850,000 sites in the DNA using three different "epigenetic clocks," providing coverage approximately double that of most prior studies [13].

The initial discovery was made using data from 6,470 participants in DZNE's Rhineland Study in Bonn [6][7][14]. Key findings were independently confirmed in an additional 1,034 participants from the EPIC-Potsdam Study, conducted by the German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE) [6][7][14].

## What the subject has said publicly
Professor Monique Breteler, Director of Population Health Sciences at DZNE and head of the Rhineland Study, stated, "Importantly, there is probably no single 'correct' diet" [6][14]. She added, "According to our data, various dietary patterns are associated with slower aging, some more, some less" [6][14]. Breteler described this as "an encouraging finding, because it leaves room to tailor healthy eating to personal and cultural preferences, budget and taste" [6][14].

Doctoral researcher Juliana Tavares observed that individuals often did not adhere to all healthy eating standards simultaneously. Tavares noted, "One and the same person could therefore rank high on one diet score and low on another" [6]. Only 18 of the 6,470 Rhineland Study participants ranked in the healthiest 25% across all ten diet scores, illustrating the diversity in eating habits [6].

## What changed and for whom
The study found that higher adherence to any of the ten studied dietary patterns was consistently linked to slower biological aging [6][11][13]. The effects on biological aging were described as "not massive, but they are measurable and relevant for prevention" [7][9][14]. By slowing the aging process, the risk of age-related diseases such as dementia or cardiovascular disorders can be reduced, contributing to healthy aging [7][9][14]. Despite their differences, these healthy diets influenced many of the same biological pathways involved in aging and chronic disease, with more than 70% of the affected pathways being common across all diets [7][10].

## What we could not confirm
The specific names of all ten dietary patterns examined were not provided [6][9][11].

## Evidence cited
1. Scientists find 10 different diets linked to slower aging (www.sciencedaily.com) — https://www.sciencedaily.com/releases/2026/10/261019093439.htm
2. German Center for Neurodegenerative Diseases (DZNE) (www.dzne.de) — https://www.dzne.de/en/
3. Nature Communications (www.nature.com) — https://www.nature.com/naturecommunications/
4. Medical Xpress (medicalxpress.com) — https://medicalxpress.com/
5. EurekAlert! (www.eurekalert.org) — https://www.eurekalert.org/
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