World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
63
Citations
16207
World Ranking
3109
National Ranking
334

Overview

David O. Kennedy is affiliated with Northumbria University in the United Kingdom. Their research primarily falls within the field of Medicine, with a notable focus on Complementary and Alternative Medicine, Physiology, Nutrition and Dietetics, Pharmacology, and Molecular Biology.

Their work addresses several main topics including:

  • Medicinal Plants and Neuroprotection
  • Ginkgo biloba and Cashew Applications
  • Coffee Research and Impacts
  • Ginseng Biological Effects and Applications
  • Cardiovascular Health and Disease Prevention
  • Medicinal Plant Extracts Effects
  • Fatty Acid Research and Health

David O. Kennedy has co-authored numerous publications with researchers such as Philippa A. Jackson, Emma L. Wightman, Julie Khan, Joanne Forster, and Ellen Smith. These collaborations have led to multiple research outputs in well-regarded scientific venues.

Frequent publication venues include:

  • Nutrients
  • Frontiers in Nutrition
  • Nutritional Neuroscience
  • Journal of Psychopharmacology
  • Sports Medicine

Selected recent papers authored or co-authored by David O. Kennedy include:

  • "Effects of Saffron Extract Supplementation on Mood, Well-Being, and Response to a Psychosocial Stressor in Healthy Adults: A Randomized, Double-Blind, Parallel Group, Clinical Trial" (2021), published in Frontiers in Nutrition
  • "Acute Effects of a Polyphenol-Rich Leaf Extract of Mangifera indica L. (Zynamite) on Cognitive Function in Healthy Adults: A Double-Blind, Placebo-Controlled Crossover Study" (2020), published in Nutrients
  • "A Randomized, Crossover Study of the Acute Cognitive and Cerebral Blood Flow Effects of Phenolic, Nitrate and Botanical Beverages in Young, Healthy Humans" (2020), published in Nutrients
  • "Differential Effects of DHA- and EPA-Rich Oils on Sleep in Healthy Young Adults: A Randomized Controlled Trial" (2021), published in Nutrients
  • "Mental Performance and Sport: Caffeine and Co-consumed Bioactive Ingredients" (2022), published in Sports Medicine

Best Publications

  • B Vitamins and the Brain: Mechanisms, Dose and Efficacy—A Review

    David O. Kennedy

  • The effects of polyphenols and other bioactives on human health

    César G. Fraga;Kevin D. Croft;David O. Kennedy;Francisco A. Tomás-Barberán

  • Herbal extracts and phytochemicals: plant secondary metabolites and the enhancement of human brain function.

    David O. Kennedy;Emma L. Wightman

  • Effects of resveratrol on cerebral blood flow variables and cognitive performance in humans: a double-blind, placebo-controlled, crossover investigation

    David O Kennedy;Emma L Wightman;Jonathon L Reay;Georg Lietz

  • Cognitive and mood improvements of caffeine in habitual consumers and habitual non-consumers of caffeine

    Crystal F. Haskell;David O. Kennedy;Keith A. Wesnes;Andrew B. Scholey

  • Cognitive demand and blood glucose

    Andrew B Scholey;Susan Harper;David O Kennedy

  • The effects of l-theanine, caffeine and their combination on cognition and mood

    Crystal F. Haskell;David O. Kennedy;Anthea L. Milne;Keith A. Wesnes

  • Modulation of mood and cognitive performance following acute administration of Melissa officinalis (lemon balm)

    David O. Kennedy;Andrew B. Scholey;Nicola T. J. Tildesley;Elaine K. Perry

  • Glucose administration, heart rate and cognitive performance: Effects of increasing mental effort

    David O. Kennedy;Andrew B. Scholey

  • Attenuation of laboratory-induced stress in humans after acute administration of Melissa officinalis (Lemon Balm).

    David O. Kennedy;Wendy Little;Andrew B. Scholey

  • Consumption of cocoa flavanols results in acute improvements in mood and cognitive performance during sustained mental effort

    Andrew B Scholey;Stephen J French;Penelope J Morris;David O Kennedy

  • Cognitive and physiological effects of an “energy drink”: an evaluation of the whole drink and of glucose, caffeine and herbal flavouring fractions

    Andrew B. Scholey;David O. Kennedy

  • Ginseng: potential for the enhancement of cognitive performance and mood

    David O Kennedy;Andrew B Scholey

  • DHA supplementation improved both memory and reaction time in healthy young adults: a randomized controlled trial

    Welma Stonehouse;Cathryn A Conlon;John Podd;Stephen R Hill

  • The dose-dependent cognitive effects of acute administration of Ginkgo biloba to healthy young volunteers

    David O. Kennedy;Andrew B. Scholey;Keith A. Wesnes

  • Anxiolytic effects of a combination of Melissa officinalis and Valeriana officinalis during laboratory induced stress

    David O. Kennedy;Wendy Little;Crystal F Haskell;Andrew B. Scholey

  • Effects of high-dose B vitamin complex with vitamin C and minerals on subjective mood and performance in healthy males.

    David O. Kennedy;Rachel Veasey;Anthony Watson;Fiona Dodd

  • Salvia lavandulaefolia (Spanish sage) enhances memory in healthy young volunteers.

    Nicola Tildesley;David Kennedy;Elaine Perry;Clive Ballard

  • Improved cognitive performance in human volunteers following administration of guarana (Paullinia cupana) extract: comparison and interaction with Panax ginseng

    David O. Kennedy;Crystal F. Haskell;Keith Wesnes;Andrew Scholey

  • Modulation of mood and cognitive performance following acute administration of single doses of Melissa officinalis (Lemon balm) with human CNS nicotinic and muscarinic receptor-binding properties.

    David O. Kennedy;G. Wake;S. Savelev;Nicola T. J. Tildesley

  • Consumption of cocoa flavanols results in acute improvements in mood and cognitive

    Andrew B Scholey;Stephen J French;Penelope J Morris;David O Kennedy

Frequent Co-Authors

Elaine K. Perry
Elaine K. Perry Newcastle University
Con Stough
Con Stough Swinburne University of Technology

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Studying psychology in the USA opens doors to a wide range of online degrees and diverse career pathways. Many graduates pursue specialized roles in education, mental health, and counseling. Becoming a school counselor is a popular choice, with each state maintaining its own specific requirements and licensure steps.

If you are interested in working with students in school settings, you’ll need to follow state guidelines. Explore how to become a school counselor in New Mexico for an understanding of the educational and supervised experience requirements. Alternatively, the requirements to be a school counselor in New York include specific graduate-level degrees and passing certification exams.

Other states, such as North Carolina and North Dakota, also have unique requirements. Learn more about becoming a school counselor in North Carolina or review the requirements to be a school counselor in North Dakota to compare pathways. Earning a psychology degree online provides flexibility and can help you meet these goals, as long as you meet your state’s professional standards.

Best Scientists Citing David O. Kennedy

Trending Scientists

Recently Published Articles