David J. Llewellyn

314 total papers · 15.2k total citations
185 papers, 9.8k citations indexed

About

David J. Llewellyn is a scholar working on Psychiatry and Mental health, Pathology and Forensic Medicine and Public Health, Environmental and Occupational Health. According to data from OpenAlex, David J. Llewellyn has authored 185 papers receiving a total of 9.8k indexed citations (citations by other indexed papers that have themselves been cited), including 50 papers in Psychiatry and Mental health, 27 papers in Pathology and Forensic Medicine and 25 papers in Public Health, Environmental and Occupational Health. Recurrent topics in David J. Llewellyn's work include Dementia and Cognitive Impairment Research (47 papers), Vitamin D Research Studies (24 papers) and Health disparities and outcomes (21 papers). David J. Llewellyn is often cited by papers focused on Dementia and Cognitive Impairment Research (47 papers), Vitamin D Research Studies (24 papers) and Health disparities and outcomes (21 papers). David J. Llewellyn collaborates with scholars based in United Kingdom, United States and Australia. David J. Llewellyn's co-authors include Iain Lang, Kenneth M. Langa, Ilianna Lourida, David Melzer, Elżbieta Kuźma, Maya Soni, Thomas J. Littlejohns, Xavier Sánchez, Cédric Annweiler and Ruth E. Hubbard and has published in prestigious journals such as JAMA, Nucleic Acids Research and Nature Genetics.

In The Last Decade

David J. Llewellyn

172 papers receiving 9.5k citations

Hit Papers

Vitamin D effects on musc... 2012 2026 2016 2021 2013 2019 2014 2012 2018 200 400 600
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation benchmark for papers published in the same subfield and year, or reaches the top citation threshold in at least one of its specific research topics.

  1. Vitamin D effects on musculoskeletal health, immunity, autoimmunity, cardiovascular disease, cancer, fertility, pregnancy, dementia and mortality—A review of recent evidence
    2013 634 citations Paweł Płudowski, Michael F. Holick et al. Autoimmunity Reviews profile →
  2. Association of Lifestyle and Genetic Risk With Incidence of Dementia
    2019 531 citations Ilianna Lourida, Eilís Hannon et al. JAMA profile →
  3. Vitamin D and the risk of dementia and Alzheimer disease
    2014 388 citations Thomas J. Littlejohns, William Henley et al. Neurology profile →
  4. Vitamin D, cognition, and dementia
    2012 332 citations Cynthia Balion, Lauren E. Griffith et al. Neurology profile →
  5. Stroke and dementia risk: A systematic review and meta‐analysis
    2018 250 citations Elżbieta Kuźma, Ilianna Lourida et al. Alzheimer s & Dementia profile →
  6. Mediterranean diet adherence is associated with lower dementia risk, independent of genetic predisposition: findings from the UK Biobank prospective cohort study
    2023 77 citations Oliver M. Shannon, Janice M. Ranson et al. BMC Medicine profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
David J. Llewellyn 2.3k 2.2k 2.0k 1.6k 992 185 9.8k
Catharine R. Galé 4.1k 1.8× 1.3k 0.6× 1.9k 1.0× 2.7k 1.6× 1.7k 1.7× 264 18.8k
Francine Grodstein 4.1k 1.8× 2.0k 0.9× 2.1k 1.1× 4.0k 2.4× 583 0.6× 341 22.3k
Julie A. Pasco 3.4k 1.5× 2.1k 0.9× 1.6k 0.8× 2.8k 1.7× 470 0.5× 392 14.8k
Sally A. Shumaker 1.6k 0.7× 1.7k 0.8× 1.5k 0.7× 1.7k 1.0× 1.1k 1.1× 153 16.9k
Stephen Sidney 2.5k 1.1× 992 0.4× 1.6k 0.8× 2.3k 1.4× 606 0.6× 234 18.1k
Arun S. Karlamangla 2.3k 1.0× 941 0.4× 877 0.4× 1.6k 0.9× 2.1k 2.1× 172 11.5k
Timothy Kwok 2.9k 1.3× 549 0.2× 2.6k 1.3× 1.2k 0.7× 516 0.5× 358 11.3k
Mary A. Whooley 2.0k 0.9× 697 0.3× 1.5k 0.7× 1.8k 1.1× 960 1.0× 325 20.6k
Stephen R. Rapp 1.6k 0.7× 1.2k 0.5× 2.5k 1.3× 1.1k 0.7× 719 0.7× 249 13.1k
D.J.H. Deeg 1.7k 0.7× 630 0.3× 1.6k 0.8× 952 0.6× 1.8k 1.8× 113 7.7k

Countries citing papers authored by David J. Llewellyn

Since Specialization
Citations

This map shows the geographic impact of David J. Llewellyn's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by David J. Llewellyn with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites David J. Llewellyn more than expected).

Fields of papers citing papers by David J. Llewellyn

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by David J. Llewellyn. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by David J. Llewellyn. The network helps show where David J. Llewellyn may publish in the future.

Co-authorship network of co-authors of David J. Llewellyn

This figure shows the co-authorship network connecting the top 25 collaborators of David J. Llewellyn. A scholar is included among the top collaborators of David J. Llewellyn based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with David J. Llewellyn. David J. Llewellyn is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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2026