Christopher M. Ryan

17.4k total citations · 1 hit paper
224 papers, 12.8k citations indexed

About

Christopher M. Ryan is a scholar working on Endocrinology, Diabetes and Metabolism, Cardiology and Cardiovascular Medicine and Psychiatry and Mental health. According to data from OpenAlex, Christopher M. Ryan has authored 224 papers receiving a total of 12.8k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Endocrinology, Diabetes and Metabolism, 40 papers in Cardiology and Cardiovascular Medicine and 33 papers in Psychiatry and Mental health. Recurrent topics in Christopher M. Ryan's work include Diabetes Management and Research (60 papers), Diabetes Treatment and Management (19 papers) and Dementia and Cognitive Impairment Research (19 papers). Christopher M. Ryan is often cited by papers focused on Diabetes Management and Research (60 papers), Diabetes Treatment and Management (19 papers) and Dementia and Cognitive Impairment Research (19 papers). Christopher M. Ryan collaborates with scholars based in United States, Netherlands and South Korea. Christopher M. Ryan's co-authors include Matthew F. Muldoon, Susan M. Sereika, Brian M. Frier, Rory J. McCrimmon, Stephen B. Manuck, M. Geckle, Nelson Butters, Geert Jan Biessels, Ian J. Deary and Lisa A. Morrow and has published in prestigious journals such as The Lancet, Journal of Biological Chemistry and Psychological Bulletin.

In The Last Decade

Christopher M. Ryan

221 papers receiving 12.2k citations

Hit Papers

align trajectories

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.

Diabetes and cognitive dysfunction

2012 704 citations Christopher M. Ryan et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Christopher M. Ryan United States	65	3.3k	2.2k	2.2k	1.7k	1.7k	224	12.8k
Anton J.M. de Craen Netherlands	68	1.6k 0.5×	2.4k 1.1×	3.4k 1.6×	2.6k 1.5×	2.5k 1.5×	298	16.6k
Erik J. Giltay Netherlands	67	2.3k 0.7×	2.2k 1.0×	1.7k 0.8×	804 0.5×	1.4k 0.8×	385	16.8k
Francesco Chiarelli Italy	63	4.4k 1.3×	2.5k 1.1×	2.2k 1.0×	2.4k 1.4×	1.4k 0.9×	629	15.9k
Michael G. Ziegler United States	71	1.3k 0.4×	1.4k 0.7×	4.2k 2.0×	1.5k 0.8×	4.6k 2.7×	407	17.0k
Meena Kumari United Kingdom	62	1.9k 0.6×	754 0.3×	2.0k 0.9×	994 0.6×	2.1k 1.2×	243	14.3k
Victor W. Henderson United States	64	5.3k 1.6×	3.4k 1.6×	2.6k 1.2×	379 0.2×	968 0.6×	272	15.4k
Julio Licínio United States	76	1.7k 0.5×	1.5k 0.7×	5.0k 2.3×	978 0.6×	956 0.6×	315	21.2k
Robert M. Cohen United States	52	2.6k 0.8×	2.2k 1.0×	2.3k 1.1×	768 0.4×	383 0.2×	212	12.4k
Steven M. Paul United States	73	999 0.3×	1.9k 0.9×	2.3k 1.1×	1.7k 1.0×	744 0.4×	431	19.3k
Cynthia M. Kuhn United States	77	1.3k 0.4×	1.3k 0.6×	2.4k 1.1×	954 0.6×	1.7k 1.0×	278	17.5k

Countries citing papers authored by Christopher M. Ryan

Since Specialization

Citations

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

Fields of papers citing papers by Christopher M. Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Christopher M. Ryan. 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 Christopher M. Ryan. The network helps show where Christopher M. Ryan may publish in the future.

Co-authorship network of co-authors of Christopher M. Ryan

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Fonseca, Luciana Mascarenhas, Frank J. Snoek, Ruth S. Weinstock, et al.. (2024). Barriers and Facilitators of Self-Management in Older People with Type 1 Diabetes: A Narrative Review Focusing on Cognitive Impairment. Diabetes Metabolic Syndrome and Obesity. Volume 17. 2403–2417. 1 indexed citations

Karger, Amy B., Ilya M. Nasrallah, Barbara H. Braffett, et al.. (2024). Plasma Biomarkers of Brain Injury and Their Association With Brain MRI and Cognition in Type 1 Diabetes. Diabetes Care. 47(9). 1530–1538. 6 indexed citations

Gupta, Nishtha, Avantika Singh, Christopher M. Ryan, et al.. (2023). Delays to care in infantile epileptic spasms syndrome: Racial and ethnic inequities. Epilepsia. 65(1). 107–114. 4 indexed citations

Chaytor, Naomi, Victoria R. Trapani, Barbara H. Braffett, et al.. (2023). Utility of the NIH Toolbox Cognition Battery in middle to older aged adults with longstanding type 1 diabetes: The DCCT/EDIC study. The Clinical Neuropsychologist. 38(4). 1007–1027. 4 indexed citations

Yoon, Sujung, Jungyoon Kim, Gail Musen, et al.. (2017). Prefronto‐temporal white matter microstructural alterations 20 years after the diagnosis of type 1 diabetes mellitus. Pediatric Diabetes. 19(3). 478–485. 13 indexed citations

Koleck, Theresa A., Catherine M. Bender, Susan M. Sereika, et al.. (2017). Associations between pathologic tumor features and preadjuvant therapy cognitive performance in women diagnosed with breast cancer. Cancer Medicine. 6(2). 339–348. 10 indexed citations

Ryan, Christopher M., Eelco van Duinkerken, & Caterina Rosano. (2016). Neurocognitive consequences of diabetes.. American Psychologist. 71(7). 563–576. 93 indexed citations

Duinkerken, Eelco van, Christopher M. Ryan, Menno M. Schoonheim, et al.. (2016). Subgenual Cingulate Cortex Functional Connectivity in Relation to Depressive Symptoms and Cognitive Functioning in Type 1 Diabetes Mellitus Patients. Psychosomatic Medicine. 78(6). 740–749. 17 indexed citations

Nunley, Karen A., Christopher M. Ryan, Judith Saxton, et al.. (2015). Early Development of Proliferative Retinopathy Increases Risk of Cognitive Dysfunction in Middle-Aged Adults with Type 1 Diabetes (P5.032). Neurology. 84(14_supplement). 2 indexed citations

10.

Janzen, Deanna M., Daniel Y. Paik, Miguel A. Rosales, et al.. (2013). Low Levels of Circulating Estrogen Sensitize PTEN-Null Endometrial Tumors to PARP Inhibition In Vivo. Molecular Cancer Therapeutics. 12(12). 2917–2928. 22 indexed citations

11.

Ryan, Christopher M.. (2013). Fear of hypoglycemia: does it have any clinical utility?. 5(3). 1–2.

12.

Hughes, Timothy M., Christopher M. Ryan, Howard Aizenstein, et al.. (2013). Frontal gray matter atrophy in middle aged adults with type 1 diabetes is independent of cardiovascular risk factors and diabetes complications. Journal of Diabetes and its Complications. 27(6). 558–564. 50 indexed citations

13.

Bender, Catherine M., Susan M. Sereika, Christopher M. Ryan, et al.. (2013). Does lifetime exposure to hormones predict pretreatment cognitive function in women before adjuvant therapy for breast cancer?. Menopause The Journal of The North American Menopause Society. 20(9). 905–913. 14 indexed citations

14.

Stilley, Carol S., Catherine M. Bender, Jacqueline Dunbar‐Jacob, Susan M. Sereika, & Christopher M. Ryan. (2010). The impact of cognitive function on medication management: Three studies.. Health Psychology. 29(1). 50–55. 187 indexed citations

15.

Ryan, Christopher M.. (2009). Recurrent hypoglycemia and the development of permanent brain damage in diabetic adults. 1(3). 3–7. 2 indexed citations

16.

Ryan, Christopher M.. (2009). Discerning the Compliance Calculus: Why States Comply with International Investment Law. The Georgia Journal of International and Comparative Law. 38(1). 63. 4 indexed citations

17.

Ryan, Christopher M.. (2008). Meeting Expectations: Assessing the Long-Term Legitimacy and Stability of International Investment Law. University of Pennsylvania journal of international economic law. 29(3). 725. 7 indexed citations

18.

Ryan, Christopher M. & Dorothy J. Becker. (1999). HYPOGLYCEMIA IN CHILDREN WITH TYPE 1 DIABETES MELLITUS. Endocrinology and Metabolism Clinics of North America. 28(4). 883–900. 46 indexed citations

19.

Dasheiff, Richard M., Christopher M. Ryan, & Judith R. Lave. (1994). Epilepsy brain surgery: a pittsburgh perspective. Seizure. 3(3). 197–207. 19 indexed citations

20.

Ryan, Christopher M., et al.. (1980). The persistence of neuropsychological impairment in male alcoholics despite five years of sobriety. Alcoholism Clinical and Experimental Research. 4(2). 2 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.

Explore authors with similar magnitude of impact