World Scientist and University Rankings 2025
World Medical and Health Sciences 1.020 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of May 17, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (1.121.239) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
Geriatrics and Gerontolog
Metrics
H-Index
i10 Index
Citation Counts
276
1,687
416,206
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* Total H IndexRankings
Ranking Based On Selection: 2
...diabetes
nutrition
nursing homes
frailty
alzheimer
Metrics
H-Index
i10 Index
Citation Counts
191
1,144
164,275
* Total H IndexRankings
Ranking Based On Selection: 3
metabolis
Metrics
H-Index
i10 Index
Citation Counts
153
568
97,548
* Total H IndexRankings
Ranking Based On Selection: 4
prevention
multimorbidity
aging
dementia
Alzheimer´s diseas
Metrics
H-Index
i10 Index
Citation Counts
152
470
120,494
* Total H IndexRankings
Ranking Based On Selection: 5
Geriatrics
Public Health
Aging
Frailty
Preventive medicin
Metrics
H-Index
i10 Index
Citation Counts
128
534
92,484
* Total H IndexRankings
Ranking Based On Selection: 6
Geriatri
Metrics
H-Index
i10 Index
Citation Counts
126
500
68,065
* Total H IndexRankings
Ranking Based On Selection: 7
Aging and Caloric Restrictio
Metrics
H-Index
i10 Index
Citation Counts
123
345
65,606
* Total H IndexRankings
Ranking Based On Selection: 8
Geriatric
Metrics
H-Index
i10 Index
Citation Counts
114
423
58,984
* Total H IndexRankings
Ranking Based On Selection: 9
Agin
Metrics
H-Index
i10 Index
Citation Counts
107
296
40,635
* Total H IndexRankings
Ranking Based On Selection: 10
health care research
geriatric
Metrics
H-Index
i10 Index
Citation Counts
101
170
40,584
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* Total H IndexRankings
Ranking Based On Selection: 11
Alzheimer's disease
geriatrics
estroge
Metrics
H-Index
i10 Index
Citation Counts
99
267
36,452
* Total H IndexRankings
Ranking Based On Selection: 12
geriatrics
lipid
atherosclerosis
sarcopenia
frailt
Metrics
H-Index
i10 Index
Citation Counts
99
399
51,023
* Total H IndexRankings
Ranking Based On Selection: 13
Aging
activity
disability
muscle strength
epidemiolog
Metrics
H-Index
i10 Index
Citation Counts
97
335
38,678
* Total H IndexRankings
Ranking Based On Selection: 14
physician patient communication
patient safety
outcomes based researc
Metrics
H-Index
i10 Index
Citation Counts
97
295
44,708
* Total H IndexRankings
Ranking Based On Selection: 15
Agin
Metrics
H-Index
i10 Index
Citation Counts
97
214
44,327
* Total H IndexRankings
Ranking Based On Selection: 16
geriatrics
drug therapy
adverse drug events
research integrit
Metrics
H-Index
i10 Index
Citation Counts
96
308
32,870
* Total H IndexRankings
Ranking Based On Selection: 17
Geriatria
Declino Cognitivo
Mild Cognitive Impairment
Malattia di Alzheimer
Nutrizion
Metrics
H-Index
i10 Index
Citation Counts
93
252
63,608
* Total H IndexRankings
Ranking Based On Selection: 18
geriatric heart failure
multiple chronic condition
Metrics
H-Index
i10 Index
Citation Counts
90
501
38,854
* Total H IndexRankings
Ranking Based On Selection: 19
geriatrics
gerontology
nutrition
dementi
Metrics
H-Index
i10 Index
Citation Counts
90
340
26,671
* Total H IndexRankings
Ranking Based On Selection: 20
geriatrics
dementia
frailty
fall
Metrics
H-Index
i10 Index
Citation Counts
88
252
43,266
* Total H IndexRankings
Ranking Based On Selection: 21
drug utilization
adverse drug events
age
Metrics
H-Index
i10 Index
Citation Counts
87
231
36,226
* Total H IndexRankings
Ranking Based On Selection: 22
gerontology
senescence
ageing
trajectorie
Metrics
H-Index
i10 Index
Citation Counts
85
347
29,036
* Total H IndexRankings
Ranking Based On Selection: 23
geriatrics-gerontology
endocrinology of aging
sarcopenia
clinical nutrition
frailt
Metrics
H-Index
i10 Index
Citation Counts
81
221
41,542
* Total H IndexRankings
Ranking Based On Selection: 24
Alzheimer's disease
Aging
Neuropsycholog
Metrics
H-Index
i10 Index
Citation Counts
81
216
26,900
* Total H IndexRankings
Ranking Based On Selection: 25
affective neuroscience
aging
locus coeruleus-norepinephrine system
heart rate variabilit
Metrics
H-Index
i10 Index
Citation Counts
79
178
30,416
Luigi Ferrucci
National Institute on Aging
Bethesda, United States
Metrics
H-Index
i10-Index
Citation Counts
276
1,687
416,206
John Morley
Saint Louis University
St. Louis, United States
Metrics
H-Index
i10-Index
Citation Counts
191
1,144
164,275
...diabetes
nutrition
nursing homes
frailty
alzheimer
Robert R Wolfe
University of Arkansas for Medical Sciences
Little Rock, United States
Metrics
H-Index
i10-Index
Citation Counts
153
568
97,548
Laura Fratiglioni
Karolinska Institute
Stockholm, Sweden
Metrics
H-Index
i10-Index
Citation Counts
152
470
120,494
prevention
multimorbidity
aging
dementia
Alzheimer´s diseas
Matteo Cesari
Metrics
H-Index
i10-Index
Citation Counts
128
534
92,484
Geriatrics
Public Health
Aging
Frailty
Preventive medicin
Roberto Bernabei
Metrics
H-Index
i10-Index
Citation Counts
126
500
68,065
Rafael Carlos De Cabo|Rafael DeCabo, Rafael d Cabo, Rafa de Cabo
National Institute on Aging
Bethesda, United States
Metrics
H-Index
i10-Index
Citation Counts
123
345
65,606
Aging and Caloric Restrictio
Graziano Onder
Metrics
H-Index
i10-Index
Citation Counts
114
423
58,984
Pinchas Cohen
University of Southern California
Los Angeles, United States
Metrics
H-Index
i10-Index
Citation Counts
107
296
40,635
Seth Landefeld
University of Alabama Birmingham
Birmingham, United States
Metrics
H-Index
i10-Index
Citation Counts
101
170
40,584
health care research
geriatric
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Gain insights from detailed performance analyses of scientists across 13 major disciplines, identify your strengths, improve weaknesses, and gain a competitive edge.. Check Your Free Sample Performance Analysis
Sanjay Asthana
Metrics
H-Index
i10-Index
Citation Counts
99
267
36,452
Alzheimer's disease
geriatrics
estroge
Hidenori Arai
Metrics
H-Index
i10-Index
Citation Counts
99
399
51,023
geriatrics
lipid
atherosclerosis
sarcopenia
frailt
Taina Rantanen
Jyväskylä University
Jyväskylä, Finland
Metrics
H-Index
i10-Index
Citation Counts
97
335
38,678
Aging
activity
disability
muscle strength
epidemiolog
Richard M Frankel
Metrics
H-Index
i10-Index
Citation Counts
97
295
44,708
physician patient communication
patient safety
outcomes based researc
Vern Bengtson
University of Southern California
Los Angeles, United States
Metrics
H-Index
i10-Index
Citation Counts
97
214
44,327
Paula A Rochon
University of Toronto
Toronto, Canada
Metrics
H-Index
i10-Index
Citation Counts
96
308
32,870
geriatrics
drug therapy
adverse drug events
research integrit
Vincenzo Solfrizzi
Metrics
H-Index
i10-Index
Citation Counts
93
252
63,608
Geriatria
Declino Cognitivo
Mild Cognitive Impairment
Malattia di Alzheimer
Nutrizion
Ali Ahmed
US Veterans Affairs
Washington, United States
Metrics
H-Index
i10-Index
Citation Counts
90
501
38,854
geriatric heart failure
multiple chronic condition
T Kwok
Metrics
H-Index
i10-Index
Citation Counts
90
340
26,671
geriatrics
gerontology
nutrition
dementi
David B Hogan
University of Calgary
Calgary, Canada
Metrics
H-Index
i10-Index
Citation Counts
88
252
43,266
geriatrics
dementia
frailty
fall
Joseph Hanlon
University of Pittsburgh
Pittsburgh, United States
Metrics
H-Index
i10-Index
Citation Counts
87
231
36,226
drug utilization
adverse drug events
age
Andrea B Maier
VU University of Amsterdam
Amsterdam, Netherlands
Metrics
H-Index
i10-Index
Citation Counts
85
347
29,036
gerontology
senescence
ageing
trajectorie
Marcello Maggio
Metrics
H-Index
i10-Index
Citation Counts
81
221
41,542
geriatrics-gerontology
endocrinology of aging
sarcopenia
clinical nutrition
frailt
Belleville Sylvie
Université de Montréal
Montréal, Canada
Metrics
H-Index
i10-Index
Citation Counts
81
216
26,900
Alzheimer's disease
Aging
Neuropsycholog
Mara Mather
University of Southern California
Los Angeles, United States
Metrics
H-Index
i10-Index
Citation Counts
79
178
30,416
affective neuroscience
aging
locus coeruleus-norepinephrine system
heart rate variabilit