John R. Speakman: h-index, Total Citations, and Citation Map
John R. Speakman's h-index is 128 (660 i10-index, 66,753+ total citations across 1,000+ publications) according to Google Scholar as of July 2026. John R. Speakman is affiliated with Chinese Academy of Sciences, SIAT and IGDB and University of Aberdeen.
John R. Speakman is a researcher affiliated with Chinese Academy of Sciences, SIAT and IGDB and University of Aberdeen, specializing in Physiological ecology, Energetics, Obesity. Their work has been cited 66,753 times. This profile visualizes their global influence, highlighting strong citation networks in United States.
John R. Speakman's Citation Metrics
Bibliometric impact based on 1,000 indexed publications.
- H-Index
- 128
- i10-Index
- 660
- Total Citations
- 66,753
- Citing Countries
- 95
As of July 2026.
John R. Speakman has an h-index of 128 and 66,753 total citations across 1000 publications, with research cited by institutions in 95 countries.
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We've mapped 5,000 of 66,753 citations for John R. Speakman
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Global Impact Map
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Body size, energy metabolism and lifespan
20051,227
Top Citing Countries
Top Citing Institutions
Visa Evidence Package
Views and exports tuned for EB-1A, O-1A, and EB-2 NIW petitions. Sustained acclaim, geographic reach, and independent-citation filtering are the strongest evidence categories immigration adjudicators look for.
Significant Contributions
Auto-detected research lines — a seminal paper and the follow-up work building on it. Review and edit before using in a petition. Each Free PDF opens in a new tab — EB-1A organises this into the structure USCIS applies to Criterion 5 of 8 CFR § 204.5(h)(3)(v); EB-1B re-frames it under § 204.5(i)(3) (outstanding researcher); NIW presents it under prong 2 of Matter of Dhanasar.
262 citing papers could not be classified (no author data) — excluded from the percentages above.
The researcher established a foundational framework for understanding the physiological costs of reproduction in small mammals, subsequently challenging simplistic oxidative stress theories of aging through highly cited, independent scholarly engagement.
The researcher established foundational theoretical frameworks for doubly labelled water methodology and extended this work to elucidate the mechanistic links between energy metabolism, oxidative damage, and life-history evolution.
The researcher advanced the 'drifty gene' hypothesis as an alternative to the thrifty gene theory, providing a sustained theoretical framework for understanding the genetic and environmental drivers of human obesity.
Citation trend (last 10 years)Click to expand
Citation Trend (Last 10 Years)
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About John R. Speakman's research
John R. Speakman is a researcher in Physiological ecology, Energetics and Obesity at Chinese Academy of Sciences, SIAT and IGDB and University of Aberdeen. Their work has been cited 66,753 times across 1,000 publications (h-index 128), according to Google Scholar.
Their most-cited work, “Body size, energy metabolism and lifespan” (2005), has accumulated 1,227 citations. Other influential works include “Energy balance and its components: implications for body weight regulation” (2012) with 1,133 citations and “Doubly labelled water: theory and practice” (1997) with 1,106 citations.
Citations of John R. Speakman's research come primarily from United States, China and United Kingdom, reflecting international research impact across 5+ countries. The interactive citation map above shows the full geographic distribution of the institutions citing this work.
