Denham Harman

23.9k total citations · 6 hit papers
79 papers, 18.2k citations indexed

About

Denham Harman is a scholar working on Aging, Physiology and Molecular Biology. According to data from OpenAlex, Denham Harman has authored 79 papers receiving a total of 18.2k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Aging, 23 papers in Physiology and 20 papers in Molecular Biology. Recurrent topics in Denham Harman's work include Genetics, Aging, and Longevity in Model Organisms (24 papers), Antioxidant Activity and Oxidative Stress (17 papers) and Free Radicals and Antioxidants (15 papers). Denham Harman is often cited by papers focused on Genetics, Aging, and Longevity in Model Organisms (24 papers), Antioxidant Activity and Oxidative Stress (17 papers) and Free Radicals and Antioxidants (15 papers). Denham Harman collaborates with scholars based in United States. Denham Harman's co-authors include Robert L. Saul, Barry Halliwell, Joe M. McCord, William A. Pryor, Edward T. Borish, Bruce N. Ames, Carroll E. Cross, D. E. Eddy, Jaime Miquel and J.E. Johnson and has published in prestigious journals such as Proceedings of the National Academy of Sciences, The Lancet and Circulation.

In The Last Decade

Denham Harman

79 papers receiving 17.1k citations

Hit Papers

Aging: A Theory Based on Free Radical and Radiation Chemi... 1956 2026 1979 2002 1956 1987 1972 1981 1992 2.0k 4.0k 6.0k
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 threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Aging: A Theory Based on Free Radical and Radiation Chemistry
    1956 6.4k citations Denham Harman Journal of Gerontology profile →
  2. Oxygen Radicals and Human Disease
    1987 1.6k citations Denham Harman et al. profile →
  3. The Biologic Clock: The Mitochondria?
    1972 1.5k citations Denham Harman Journal of the American Geriatrics Society profile →
  4. The aging process.
    1981 1.5k citations Denham Harman Proceedings of the National Academy of Sciences profile →
  5. Free radical theory of aging
    1992 730 citations Denham Harman profile →
  6. The Free Radical Theory of Aging
    2003 563 citations Denham Harman profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Denham Harman United States 46 8.0k 5.5k 3.7k 2.2k 2.1k 79 18.2k
Rajindar S. Sohal United States 79 10.7k 1.3× 7.1k 1.3× 6.3k 1.7× 1.3k 0.6× 1.6k 0.8× 235 22.2k
Nikki J. Holbrook United States 72 15.3k 1.9× 4.0k 0.7× 1.3k 0.3× 1.2k 0.5× 1.3k 0.6× 154 29.2k
José Viña Spain 84 8.3k 1.0× 7.9k 1.4× 1.2k 0.3× 1.7k 0.8× 2.1k 1.0× 374 25.2k
Arlan Richardson United States 72 10.6k 1.3× 8.1k 1.5× 4.4k 1.2× 730 0.3× 1.5k 0.7× 273 21.7k
Hae Young Chung South Korea 73 8.5k 1.1× 4.4k 0.8× 997 0.3× 2.2k 1.0× 2.3k 1.1× 532 21.6k
Gustavo Barja Spain 63 5.8k 0.7× 4.7k 0.9× 3.3k 0.9× 867 0.4× 1.1k 0.5× 162 11.6k
Tilman Grune Germany 88 12.4k 1.6× 6.0k 1.1× 1.2k 0.3× 2.3k 1.1× 2.2k 1.1× 474 26.0k
Christiaan Leeuwenburgh United States 87 11.3k 1.4× 11.0k 2.0× 2.3k 0.6× 1.0k 0.5× 1.8k 0.8× 324 26.7k
Robert A. Floyd United States 66 7.8k 1.0× 4.7k 0.9× 527 0.1× 1.4k 0.6× 1.9k 0.9× 209 19.1k
Holly Van Remmen United States 68 12.6k 1.6× 7.1k 1.3× 3.0k 0.8× 638 0.3× 1.5k 0.7× 220 20.5k

Countries citing papers authored by Denham Harman

Since Specialization
Citations

This map shows the geographic impact of Denham Harman'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 Denham Harman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Denham Harman more than expected).

Fields of papers citing papers by Denham Harman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Denham Harman. 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 Denham Harman. The network helps show where Denham Harman may publish in the future.

Co-authorship network of co-authors of Denham Harman

This figure shows the co-authorship network connecting the top 25 collaborators of Denham Harman. A scholar is included among the top collaborators of Denham Harman 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 Denham Harman. Denham Harman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Harman, Denham. (2009). Origin and evolution of the free radical theory of aging: a brief personal history, 1954–2009. Biogerontology. 10(6). 773–781. 151 indexed citations
2.
Harman, Denham, et al.. (2006). Alzheimer’s disease pathogenesis: role of aging. 4 indexed citations
3.
Harman, Denham. (2002). Alzheimer's Disease: Role of Aging in Pathogenesis. Annals of the New York Academy of Sciences. 959(1). 384–395. 57 indexed citations
4.
Harman, Denham. (2000). Alzheimer’s disease: A hypothesis on pathogenesis. AGE. 23(3). 147–161. 11 indexed citations
5.
Harman, Denham. (2000). Antioxidant supplements: Effects on disease and aging in the United States population. AGE. 23(1). 25–31. 7 indexed citations
6.
7.
Harman, Denham. (1999). Aging: Minimizing Free Radical Damage. 2(1). 15–36. 23 indexed citations
8.
Harman, Denham, R. Holliday, & Mohsen Meydani. (1998). Towards prolongation of the healthy life span : practical approaches to intervention. New York Academy of Sciences eBooks. 10 indexed citations
9.
Harman, Denham. (1998). Extending Functional Life Span. Experimental Gerontology. 33(1-2). 95–112. 71 indexed citations
10.
Harman, Denham. (1998). Aging: Phenomena and Theories. Annals of the New York Academy of Sciences. 854(1). 1–7. 121 indexed citations
11.
Harman, Denham. (1995). Role of antioxidant nutrients in aging: Overview. AGE. 18(2). 51–62. 71 indexed citations
12.
Harman, Denham. (1994). Free‐Radical Theory of Aging. Annals of the New York Academy of Sciences. 717(1). 1–15. 190 indexed citations
13.
Harman, Denham. (1993). Free Radical Involvement in Aging. Drugs & Aging. 3(1). 60–80. 178 indexed citations
14.
Fabris, Nicola, et al.. (1992). Physiopathological processes of aging : towards a multicausal interpretation. New York Academy of Sciences eBooks. 8 indexed citations
15.
Harman, Denham. (1990). The aging process: A major risk factor for disease and death. Free Radical Biology and Medicine. 9. 13–13. 20 indexed citations
16.
Johnson, J.E., Roy L. Walford, Denham Harman, & Jaime Miquel. (1986). Free radicals, aging, and degenerative diseases. Medical Entomology and Zoology. 256 indexed citations
17.
Harman, Denham. (1981). The aging process.. Proceedings of the National Academy of Sciences. 78(11). 7124–7128. 1491 indexed citations breakdown →
18.
Harman, Denham, Margaret L. Heidrick, & D. E. Eddy. (1977). Free Radical Theory of Aging: Effect of Free‐Radical‐Reaction Inhibitors on the Immune Response†. Journal of the American Geriatrics Society. 25(9). 400–407. 60 indexed citations
19.
Brody, Harold J., Denham Harman, & J. M. Ordy. (1975). Clinical, morphologic, and neurochemical aspects in the aging central nervous system. Raven Press eBooks. 39 indexed citations
20.
Harman, Denham. (1957). Atherosclerosis: A Hypothesis Concerning the Initiating Steps in Pathogenesis. Journal of Gerontology. 12(2). 199–202. 57 indexed citations

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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