John R. Speakman Google Scholar: h-index, Total Citations, and Citation Map
John R. Speakman's h-index is 129 (663 i10-index, 67,331+ total citations across 1,000+ publications) according to Google Scholar as of October 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 67,331 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
- 129
- i10-Index
- 663
- Total Citations
- 67,331
- Citing Countries
- 97
As of October 2026.
John R. Speakman has an h-index of 129 and 67,331 total citations across 1000 publications, with research cited by institutions in 97 countries.
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Global Impact Map
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Body size, energy metabolism and lifespan
20051,255
Top Citing Countries
Top Citing Institutions
Visa Evidence Package
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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.
114 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 67,331 times across 1,000 publications (h-index 129), according to Google Scholar.
Their most-cited work, “Body size, energy metabolism and lifespan” (2005), has accumulated 1,255 citations. Other influential works include “Energy balance and its components: implications for body weight regulation” (2012) with 1,176 citations and “Doubly labelled water: theory and practice” (1997) with 1,111 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.
