Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Ginseng (most commonly Panax ginseng or Panax quinquefolius) has a long history of traditional use in East Asian medicine for enhancing vitality and mental performance, including concentration. Modern scientific research has investigated its effects on cognitive function. Several randomized controlled trials and meta-analyses suggest that ginseng may have modest, short-term benefits on cognitive performance, attention, and memory in healthy individuals and in those with cognitive decline. Proposed mechanisms include ginsenosides' modulation of neurotransmitter systems, improved cerebral blood flow, and anti-inflammatory effects. However, while some studies show statistically significant improvements in measures of concentration, the overall quality of evidence is moderate. Many trials are limited by small sample sizes, short duration, and heterogeneity in ginseng preparations and dosages. Systematic reviews (e.g., Reay et al., 2005; Kennedy et al., 2001; and meta-analyses up to 2022) generally conclude that ginseng may offer mild improvements in cognitive domains, including concentration, but emphasize the need for larger, more rigorous studies to confirm efficacy and determine optimal dosing. Thus, the use of ginseng for poor concentration is supported by both tradition and some scientific evidence, but the strength of the evidence is not robust.

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