World's Best Scientists 2026 revealed!

D-Index & Metrics

Microbiology

D-Index
99
Citations
36936
World Ranking
434
National Ranking
200

Medicine

D-Index
107
Citations
43543
World Ranking
6237
National Ranking
3327

Ali Keshavarzian publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Ali Keshavarzian sits on this spectrum.

55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 264 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 233 scientists 205–214 publications: 207 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55 publications 679+

This scientist: 435 publications — 92nd percentile

92% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

Ali Keshavarzian D-index placement in Microbiology in 2026

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

40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 111 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 122 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 93 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 99 D-Index — 92nd percentile

92% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

Overview

Ali Keshavarzian is affiliated with Rush University Medical Center in the United States and has contributed extensively to the field of medicine, with a total of 196 publications. Their research spans several subfields, including molecular biology, physiology, neurology, infectious diseases, and epidemiology, reflecting a multidisciplinary approach to medical science.

The scientist's work prominently focuses on topics related to gut microbiota and health, diet and metabolism, Parkinson's disease mechanisms and treatments, tryptophan and brain disorders, circadian rhythm and melatonin, dietary effects on health, and COVID-19 clinical research studies. These main topics highlight a broad interest in the intersections of microbiology, neurology, metabolism, and immune response.

Among recent significant publications are:

  • Circadian rhythms and the gut microbiota: from the metabolic syndrome to cancer (2020), published in Nature Reviews Endocrinology
  • Serotonin reduction in post-acute sequelae of viral infection (2023), published in Cell
  • Plasma Markers of Disrupted Gut Permeability in Severe COVID-19 Patients (2021), published in Frontiers in Immunology
  • The human gut microbiome and health inequities (2021), published in Proceedings of the National Academy of Sciences
  • The gut microbiome in Parkinson's disease: A culprit or a bystander? (2020), published in Progress in brain research

Keshavarzian has collaborated frequently with several co-authors over their career, including Maliha Shaikh, Phillip A. Engen, Robin M. Voigt, Christopher B. Forsyth, and Stefan J. Green. These collaborations underline a network of partnerships likely centered around microbiome, neurological disorders, and metabolic research.

Key publication venues where Keshavarzian's research has appeared multiple times include Gastroenterology, bioRxiv (Cold Spring Harbor Laboratory), The American Journal of Gastroenterology, Zenodo (CERN European Organization for Nuclear Research), and UNC Libraries. Gastroenterology stands out as the most frequent venue, with seventeen publications.

Best Publications

  • Gut Microbiota Regulate Motor Deficits and Neuroinflammation in a Model of Parkinson’s Disease

    Timothy R. Sampson;Justine W. Debelius;Taren Thron;Stefan Janssen

  • Disease-specific alterations in the enteric virome in inflammatory bowel disease.

    Jason M. Norman;Scott A. Handley;Megan T. Baldridge;Lindsay Droit

  • Colonic bacterial composition in Parkinson's disease.

    Ali Keshavarzian;Stefan J. Green;Phillip A. Engen;Robin M. Voigt

  • The NASA Twins Study: A multidimensional analysis of a year-long human spaceflight.

    Francine E. Garrett-Bakelman;Francine E. Garrett-Bakelman;Manjula Darshi;Stefan J. Green;Ruben C. Gur

  • Increased Intestinal Permeability Correlates with Sigmoid Mucosa alpha-Synuclein Staining and Endotoxin Exposure Markers in Early Parkinson's Disease

    Christopher B. Forsyth;Kathleen M. Shannon;Jeffrey H. Kordower;Robin M. Voigt

  • Colonic microbiome is altered in alcoholism

    Ece A. Mutlu;Patrick M. Gillevet;Huzefa Rangwala;Masoumeh Sikaroodi

  • Intestinal barrier: an interface between health and disease.

    Ashkan Farhadi;Ali Banan;Jeremy Fields;Ali Keshavarzian

  • Alpha-synuclein in colonic submucosa in early untreated Parkinson's disease

    Kathleen M. Shannon;Ali Keshavarzian;Ece Mutlu;Hemraj B. Dodiya

  • Is alpha-synuclein in the colon a biomarker for premotor Parkinson's Disease? Evidence from 3 cases†‡§

    Kathleen M. Shannon;Ali Keshavarzian;Hemraj B. Dodiya;Shriram Jakate

  • Gut bacterial tyrosine decarboxylases restrict levels of levodopa in the treatment of Parkinson’s disease

    Sebastiaan P. van Kessel;Alexandra K. Frye;Ahmed O. El-Gendy;Maria Castejon

  • A Compositional Look at the Human Gastrointestinal Microbiome and Immune Activation Parameters in HIV Infected Subjects

    Ece A. Mutlu;Ali Keshavarzian;John Losurdo;Garth Swanson

  • Circadian Disorganization Alters Intestinal Microbiota

    Robin M. Voigt;Christopher B. Forsyth;Stefan J. Green;Ece Mutlu

  • The Gastrointestinal Microbiome: Alcohol Effects on the Composition of Intestinal Microbiota.

    Phillip A Engen;Stefan J Green;Robin M Voigt;Christopher B Forsyth

  • Lactobacillus GG treatment ameliorates alcohol-induced intestinal oxidative stress, gut leakiness, and liver injury in a rat model of alcoholic steatohepatitis.

    Christopher B. Forsyth;Ashkan Farhadi;Shriram M. Jakate;Yueming Tang

  • Intestinal fungi contribute to development of alcoholic liver disease

    An Ming Yang;Tatsuo Inamine;Tatsuo Inamine;Katrin Hochrath;Peng Chen

  • Leaky gut in alcoholic cirrhosis: a possible mechanism for alcohol-induced liver damage

    A Keshavarzian;E W Holmes;M Patel;F Iber

  • Role of TLR4 in the gut-brain axis in Parkinson’s disease: a translational study from men to mice

    Paula Perez-Pardo;Hemraj B Dodiya;Phillip A Engen;Christopher B Forsyth

  • Alcohol, Intestinal Bacterial Growth, Intestinal Permeability to Endotoxin, and Medical Consequences: Summary of a Symposium

    Vishnudutt Purohit;J. Christian Bode;Christiane Bode;David A. Brenner

  • Intestinal Dysbiosis: A Possible Mechanism of Alcohol‐Induced Endotoxemia and Alcoholic Steatohepatitis in Rats

    Ece Mutlu;Ali Keshavarzian;Phillip Engen;Christopher B. Forsyth

  • Evidence that chronic alcohol exposure promotes intestinal oxidative stress, intestinal hyperpermeability and endotoxemia prior to development of alcoholic steatohepatitis in rats.

    Ali Keshavarzian;Ashkan Farhadi;Christopher B. Forsyth;Jayanthi Rangan

Frequent Co-Authors

Stefan J. Green
Stefan J. Green University of Illinois at Chicago
Alan L. Landay
Alan L. Landay The University of Texas Medical Branch at Galveston
Fred W. Turek
Fred W. Turek Northwestern University
Bruce R. Hamaker
Bruce R. Hamaker Purdue University West Lafayette
Patrick M. Gillevet
Patrick M. Gillevet George Mason University
Johan Garssen
Johan Garssen Utrecht University
Martha Hotz Vitaterna
Martha Hotz Vitaterna Northwestern University
Masoumeh Sikaroodi
Masoumeh Sikaroodi George Mason University
Helen J. Burgess
Helen J. Burgess University of Michigan–Ann Arbor
Kathleen M. Shannon
Kathleen M. Shannon University of Wisconsin–Madison

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Related Online Degrees & Career Pathways

Exploring related online degrees can open diverse career pathways beyond traditional microbiology roles. For instance, students interested in public health might consider mph online programs with easy admission requirements. These programs often provide flexible learning options and can be a practical gateway to advancing careers in healthcare and research.

Healthcare fields offer various specialized careers, such as becoming a child life specialist salary professional, which blends psychology, healthcare, and child development. This pathway is ideal for microbiology graduates interested in supporting pediatric patients through illness.

For individuals with unique challenges in their educational journey, some online colleges that accept felons offer accessible programs to help overcome barriers and foster career growth in health-related fields.

Another promising career option is in nursing with a focus on holistic care. Programs for functional medicine nurse practitioner programs integrate traditional science with alternative approaches, appealing to those passionate about comprehensive patient care.

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