World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
81
Citations
25177
World Ranking
16594
National Ranking
8332

Robert P. Friedland publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Robert P. Friedland sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 308 publications — 18th percentile

18% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Robert P. Friedland D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Robert P. Friedland sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 81 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

Robert P. Friedland is affiliated with the University of Louisville in the United States and has made contributions primarily in the field of Medicine, with a focus on subfields such as Neurology, Molecular Biology, Periodontics, Epidemiology, and Public Health, Environmental and Occupational Health.

The main topics covered in Friedland's research involve oral microbiology and periodontitis research, gut microbiota and health, tryptophan and brain disorders, Alzheimer's disease research and treatments, dementia and cognitive impairment research, iron metabolism and disorders, and trace elements in health.

Friedland has authored and co-authored numerous scientific papers, notable recent publications include:

  • What Are the Molecular Mechanisms by Which Functional Bacterial Amyloids Influence Amyloid Beta Deposition and Neuroinflammation in Neurodegenerative Disorders? (2020), International Journal of Molecular Sciences
  • Gut dysbiosis, defective autophagy and altered immune responses in neurodegenerative diseases: Tales of a vicious cycle (2021), Pharmacology & Therapeutics
  • The 2022 symposium on dementia and brain aging in low- and middle-income countries: Highlights on research, diagnosis, care, and impact (2024), Alzheimer s & Dementia
  • Oral Carriage of Streptococcus mutans Harboring the cnm Gene Relates to an Increased Incidence of Cerebral Microbleeds (2020), Stroke
  • Interplay of Ferritin Accumulation and Ferroportin Loss in Ageing Brain: Implication for Protein Aggregation in Down Syndrome Dementia, Alzheimer's, and Parkinson's Diseases (2022), International Journal of Molecular Sciences

Frequent co-authors working alongside Friedland include Masafumi Ihara, Shuichi Tonomura, Shuhei Ikeda, Yorito Hattori, and Masatoshi Koga.

Friedland's work has been published in a range of scientific venues, with repeated publications appearing in Alzheimer s & Dementia, Journal of Alzheimer s Disease, International Journal of Molecular Sciences, Frontiers in Aging Neuroscience, and Scientific Reports.

Additionally, Friedland has a book titled Unaging, published by Cambridge University Press in 2022.

Best Publications

  • Alzheimer's disease and vascular dementia in developing countries: prevalence, management, and risk factors

    Raj N. Kalaria;Gladys E. Maestre;Gladys E. Maestre;Raul Arizaga;Robert P. Friedland

  • The neuronal sortilin-related receptor SORL1 is genetically associated with Alzheimer disease

    Ekaterina Rogaeva;Ekaterina Rogaeva;Yan Meng;Joseph H. Lee;Yongjun Gu;Yongjun Gu

  • Cerebral glucose metabolism in childhood-onset obsessive-compulsive disorder.

    Susan E. Swedo;Mark B. Schapiro;Cheryl L. Grady;Deborah L. Cheslow

  • Depression as a risk factor for Alzheimer disease: the MIRAGE Study.

    Robert C. Green;L. Adrienne Cupples;Alex Kurz;Sanford Auerbach

  • Patients with Alzheimer's disease have reduced activities in midlife compared with healthy control-group members

    Robert P. Friedland;Thomas Fritsch;Kathleen A. Smyth;Elisabeth Koss

  • Regional cerebral metabolic alterations in dementia of the Alzheimer type: positron emission tomography with [18F]fluorodeoxyglucose.

    Robert P. Friedland;Thomas F. Budinger;Edward Ganz;Yukio Yano

  • Longitudinal study of the early neuropsychological and cerebral metabolic changes in dementia of the Alzheimer type

    Cheryl L. Grady;J. V. Haxby;B. Horwitz;M. Sundaram

  • Identification of vascular structures as a major source of signal contrast in high resolution 2D and 3D functional activation imaging of the motor cortex at l.5T preliminary results

    S. Lai;A. L. Hopkins;E. M. Haacke;D. Li

  • Meta-analysis confirms CR1, CLU, and PICALM as Alzheimer disease risk loci and reveals interactions with APOE genotypes.

    Gyungah Jun;Adam C. Naj;Gary W. Beecham;Li San Wang

  • Apolipoprotein E-epsilon4 alleles in cerebral amyloid angiopathy and cerebrovascular pathology associated with Alzheimer's disease.

    D. R. D. Premkumar;D. L. Cohen;P. Hedera;R. P. Friedland

  • Neuroanatomical abnormalities in obsessive-compulsive disorder detected with quantitative X-ray computed tomography.

    Jay S. Luxenberg;Susan E. Swedo;Martine F. Flament;Robert P. Friedland

  • Neuronal Oxidative Stress Precedes Amyloid-β Deposition in Down Syndrome

    Akihiko Nunomura;Akihiko Nunomura;George Perry;Miguel A. Pappolla;Robert P. Friedland

  • Longitudinal study of cerebral metabolic asymmetries and associated neuropsychological patterns in early dementia of the Alzheimer type.

    James V. Haxby;Cheryl L. Grady;Elisabeth Koss;Barry Horwitz

  • Exposure to the Functional Bacterial Amyloid Protein Curli Enhances Alpha-Synuclein Aggregation in Aged Fischer 344 Rats and Caenorhabditis elegans.

    Shu G. Chen;Vilius Stribinskis;Madhavi J. Rane;Donald R. Demuth

  • Motor vehicle crashes in dementia of the Alzheimer type

    Robert P. Friedland;Elisabeth Koss;Anand Kumar;Sean Gaine

  • Retrieval from semantic memory in Alzheimer-type dementia

    Beth A. Ober;Nina F. Dronkers;Elisabeth Koss;Dean C. Delis

  • Cerebrospinal fluid production is reduced in healthy aging.

    C. May;J. A. Kaye;John R. Atack;M. B. Schapiro

  • Mechanisms of Molecular Mimicry Involving the Microbiota in Neurodegeneration

    Robert P. Friedland

  • Nicotine inhibits amyloid formation by the beta-peptide.

    Arthur R. Salomon;Keith J. Marcinowski;Robert P. Friedland;Michael G. Zagorski

  • Lack of association between angiotensin-converting enzyme and dementia of the Alzheimer’s type in an elderly Arab population in Wadi Ara, Israel

    Abdalla Bowirrat;Jing Cui;Kristin Waraska;Robert P Friedland

Frequent Co-Authors

Lindsay A. Farrer
Lindsay A. Farrer Boston University
George Perry
George Perry The University of Texas at San Antonio
Mark A. Smith
Mark A. Smith Case Western Reserve University
Stanley I. Rapoport
Stanley I. Rapoport National Institutes of Health
William J. Jagust
William J. Jagust University of California, Berkeley
Joseph C. LaManna
Joseph C. LaManna Case Western Reserve University
Jeffrey Kaye
Jeffrey Kaye Oregon Health & Science University
Amos D. Korczyn
Amos D. Korczyn Tel Aviv University
Clinton T. Baldwin
Clinton T. Baldwin Boston University
James V. Haxby
James V. Haxby Dartmouth College

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