Dietary patterns correlate with slower biological aging
Adhering to any of ten recognized dietary patterns correlates with slower biological aging, according to research published in Nature Communications.
Researchers at the German Center for Neurodegenerative Diseases (DZNE) examined data from 6,470 participants aged 30 and older, comparing dietary habits against blood biomarkers and DNA methylation patterns that indicate biological age, Newspaper Oxygen reported.
The analysis evaluated ten distinct nutritional models: the Mediterranean diet, the Nordic diet, the Dietary Approaches to Stop Hypertension (DASH) diet, the MIND diet, the Alternative Healthy Eating Index (AHEI-2010), the Plant-Based Diet Index (PDI), the Healthful Plant-Based Diet Index (hPDI), the EAT-Lancet diet, the Unhealthful Plant-Based Diet Index (uPDI), and the Dietary Inflammatory Index (DII). For the final two indices, which measure unhealthier habits, lower scores correlated with slower biological aging.
Investigators analyzed approximately 850,000 regions on DNA to evaluate biological aging, finding that more than 70 percent of the affected biological processes overlapped across different dietary models. The findings were subsequently validated in an independent group of 1,034 participants, as noted by HThayat.
Scientists measured biological age using epigenetic clocks
To measure biological age, scientists utilized three distinct epigenetic clock approaches, analyzing roughly 850,000 DNA regions using advanced technology that doubled the coverage of previous studies, according to Alanya Postası.
“We used three different approaches, known as epigenetic clocks, to read biological age from DNA methylation,” said Juliana Tavares, an epidemiologist at DZNE.
The study found that perfect adherence to a single rigid dietary model is unnecessary to achieve cellular benefits. Only 18 individuals out of the primary cohort of 6,470 participants ranked in the top 25 percent across all ten dietary scores, according to HThayat.
Healthier eating habits may lower disease risks
Maintaining healthier eating habits contributes to lowering the risk of age-related conditions such as dementia and cardiovascular disease, though the observational study does not establish a direct cause-and-effect relationship between diet and biological aging.
“By slowing down the aging process, the risk of age-related diseases such as dementia or cardiovascular diseases can be reduced,” said Monique Breteler, an epidemiologist at DZNE, nefes.com.tr reported.
Questions About Diet Quality and Cellular Age
Does the research prove that changing your diet reverses biological aging?
No, the study does not establish a direct cause-and-effect relationship between specific dietary changes and reversed biological aging. Investigators emphasize that the findings demonstrate strong associations between dietary quality and slower epigenetic aging across multiple populations.
How many participants were involved in verifying the initial findings?
Scientists validated their initial discoveries using an independent test group consisting of 1,034 participants, confirming the link between higher diet quality and slower epigenetic aging.
Is strict adherence to one specific diet required for cellular benefits?
“You don’t need a perfect diet. That might be the most practical message here,” said DZNE epidemiologist Juliana Tavares. General steps toward healthier eating patterns are sufficient to show measurable differences in biological age indicators.