Effects of Ginger Extract Powder E on attention as a Cognitive Function: A randomized, double-blind, and placebo-controlled parallel study | Functional Foods in Health and Disease - Online ISSN: 2160-3855; Print ISSN: 2378-7007 Skip to main content Skip to main navigation menu Skip to site footer Open Menu Functional Foods in Health and Disease - Online ISSN: 2160-3855; Print ISSN: 2378-7007 Home Food Science Publisher Functional Food Center Current Archives About About the Journal Aims and Scope Contact Editing Services Editorial Team Express Peer Review Graphical Abstract Journal Insights Privacy Statement Submissions Announcements Search Search Register Login Home / Archives / Vol. 15 No. 9 (2025): September 2025 / Clinical Trial Effects of Ginger Extract Powder E on attention as a Cognitive Function: A randomized, double-blind, and placebo-controlled parallel study Authors Naoki Nakamura Yuichi Sano Naoko Suzuki Tsuyoshi Takara DOI: https://doi.org/10.31989/ffhd.v15i9.1714 Abstract Background/Objectives: Ginger Extract Powder E is a heat-processed ginger preparation enriched in 6-shogaol.. It has been reported to reduce fatigue caused by desk workload, as well as eye fatigue and shoulder stiffness. However, there is a lack of research investigating the effects of Ginger Extract Powder E on cognitive function. The purpose of this study was to evaluate the effects of Ginger Extract Powder E intake on cognitive function after Visual Display Terminal (VDT) work in healthy adults who experienced eye fatigue and reduced concentration during the task. Methods: A randomized, double-blind, placebo-controlled, parallel-group study was conducted on 88 healthy adult male and female aged 21 to 73 years. Participants were randomly assigned to receive either a test food containing Ginger Extract Powder E (100 mg) or a placebo daily for 12 weeks. Participants were assessed at weeks 0 and 12 using Cognitrax and the critical flicker-fusion frequency after 60 minutes of VDT work. Results: At 12 weeks of intervention, the primary outcome—Complex Attention score on the Cognitrax assessment—was significantly higher in the Ginger Extract Powder E group compared with the placebo group, with values exceeding the mean. Conclusions: The results suggest that continuous intake of Ginger Extract Powder E prevents attention decline induced by VDT work and helps maintain concentration. Additionally, no adverse events were observed under the conditions of this study, and there were no safety issues. Trial registration: jRCT 1030240208 Keywords: Ginger extract; VDT work; attention; concentration; cognitive function Downloads [Abstract] [Full Article] Published 2025-09-18 Issue Vol. 15 No. 9 (2025): September 2025 Section Clinical Trial License Copyright (c) 2025 Functional Foods in Health and Disease - Online ISSN: 2160-3855; Print ISSN: 2378-7007 This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Authors retain the copyright of their articles and grant the Functional Food Center (FFC) and its journals the right of first publication under the terms of the Creative Commons Attribution 4.0 International License. This license permits unrestricted use, distribution, and reproduction in any medium, including commercial use, provided the original author(s) and source are properly credited. Authors may post and share their published work freely, provided that the original publication in this journal is acknowledged. By submitting to this journal, authors confirm that their manuscripts are original, not under consideration elsewhere, and that they hold the necessary rights to grant this license. The Functional Food Center encourages open scientific exchange and allows derivative and extended works, provided attribution to the original publication is maintained. About the Journal      Editing Services      Graphical Abstract      Journal Insights        Submissions        Editorial Team       Privacy Statement        Contact        Current        Archives   Open Journal Systems Hosting and Support by: OpenJournalSystems.com