Library.

“Asian ginseng (Panax ginseng) has stimulant effects on the central nervous system.”

Evidence supports that Panax ginseng can exert stimulant-type effects on the central nervous system. Peer-reviewed reviews and some human studies report neurotransmitter modulation, improved attention or reaction time, and insomnia or alerting effects in some users. Its overall action is broader than simple stimulation, but that does not negate the presence of stimulant effects.

“Lemon balm (Melissa officinalis) reduces anxiety and produces a calming effect on the nervous system.”

Multiple randomized, double-blind, placebo-controlled trials and a meta-analysis confirm that lemon balm supplementation can reduce anxiety and produce calming effects, supported by a well-characterized GABAergic mechanism. However, the claim is somewhat overstated: most positive trials used proprietary standardized extracts (e.g., Cyracos) in populations pre-selected for emotional distress or comorbid conditions, and the meta-analysis flagged high heterogeneity. The effect is real but mild compared to pharmaceutical anxiolytics, and results may not generalize to all lemon balm products or all populations.

“Atrial fibrillation reduces glymphatic flow in the brain, impairing the clearance of waste metabolites.”

Emerging evidence suggests a link between atrial fibrillation and reduced glymphatic activity, but the claim presents this as an established causal mechanism when it remains a contested hypothesis. The strongest experimental data comes from cardiac arrest models in mice—not AF—and the only dedicated clinical study involved just 13 patients. Most peer-reviewed AF literature attributes cognitive decline to hypoperfusion, microembolism, and inflammation rather than glymphatic impairment specifically, and the underlying premise that vascular pulsation drives glymphatic flow is itself disputed.