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. 2025 Jun 26;17(13):2119.
doi: 10.3390/nu17132119.

Global Trends and Developments in Diet and Longevity Research: A Bibliometric Analysis

Simge Sipahi  1 , Kezban Esen Karaca Çelik  2 , Nurhan Doğan  3 , Theodora Mouratidou  4 , Murat Baş  1
Affiliations

Global Trends and Developments in Diet and Longevity Research: A Bibliometric Analysis

Simge Sipahi et al. Nutrients. .

Abstract

Background/Objectives: The global population is rapidly aging, raising interest in dietary practices for promoting the healthspan. This study aimed to comprehensively investigate the state of diet and longevity research over the past decade, addressing the lack of bibliometric synthesis within the field. Methods: A bibliometric analysis was performed using the keywords "diet" and "longevity" on English-language articles from the Web of Science database that were published from 2015 to 2024. Data were analyzed using Web of Science tools, InCites, and VOSviewer to identify trends in publication output, citation metrics, coauthorship networks, institutional contributions, and keyword co-occurrence patterns. Results: Overall, 2203 articles meeting the inclusion criteria were included in the analysis. Publication volume and citation counts gradually increased, peaking in 2021. Countries, including the United Kingdom, and organizations, such as the National Institutes of Health and Harvard University, had significant citation impact, and the United States and China led productivity. Molecular processes (oxidative stress and autophagy), dietary models (Mediterranean diet and calorie restriction), and public health issues (obesity and mortality) were the main thematic clusters. Model species, including Caenorhabditis elegans and Drosophila melanogaster, were frequently used. Regional disparities in research production and notable terminology variability were noted. Conclusions: This study emphasizes the development and diversity of nutrition and longevity research while highlighting novel molecular and translational topics. More international cooperation, uniform language, and multidisciplinary frameworks are warranted to promote equal scientific advancement worldwide and connect mechanistic discoveries with therapeutic outcomes.

Keywords: InCites; VOSviewer; bibliometric analysis; diet; healthy aging; longevity.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Workflow of the bibliometric study: search strategy, filtering criteria, and analytical framework.
Figure 2
Figure 2
Annual trends in publication volume and citation counts on diet and longevity research (2015–2024).
Figure 3
Figure 3
Coauthorship and citation network of the top contributing authors in diet and longevity research.
Figure 4
Figure 4
International coauthorship network: global research collaborations on diet and longevity (2015–2024).
Figure 5
Figure 5
Most productive journals in diet and longevity research: number of publications per source.
Figure 6
Figure 6
Co-citation network of scientific journals referenced in diet and longevity research.
Figure 7
Figure 7
Keyword co-occurrence map: thematic clusters in diet and longevity research (2015–2024).
See this image and copyright information in PMC

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