期刊
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
卷 63, 期 22, 页码 5521-5545出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10408398.2021.2021137
关键词
Plant nootropics; cognitive enhancers; learning; memory; anxiety; motor skills; perceptual skills; cognitive decay; natural compounds; herbal extracts; phytotherapy; tinnitus; dementia; Parkinson's disease; Alzheimer's disease
This systematic review provides state-of-the-art information on the proven and unproven effects of plant-derived nootropics (PDNs) on human cognition in conditions of health and disease. The findings suggest that Ginkgo biloba is most relevant to perceptual and motor functions, Bacopa monnieri improves language, learning, and memory, Withania somnifera modulates anxiety and social-related cognitions, and caffeine enhances attention and executive functions.
Substances with modulatory capabilities on certain aspects of human cognition have been revered as nootropics from the dawn of time. The plant kingdom provides most of the currently available nootropics of natural origin. Here, in this systematic review, we aim to provide state-of-the-art information regarding proven and unproven effects of plant-derived nootropics (PDNs) on human cognition in conditions of health and disease. Six independent searches, one for each neurocognitive domain (NCD), were performed in parallel using three independent scientific library databases: PubMed, Cochrane and Scopus. Only scientific studies and systematic reviews with humans published between January 2000 and November 2021 were reviewed, and 256 papers were included. Ginkgo biloba was the most relevant nootropic regarding perceptual and motor functions. Bacopa monnieri improves language, learning and memory. Withania somnifera (Ashwagandha) modulates anxiety and social-related cognitions. Caffeine enhances attention and executive functions. Together, the results from the compiled studies highlight the nootropic effects and the inconsistencies regarding PDNs that require further research.
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