Evidence supporting the use of: Bacopa monnieri
For the body system: Parasympathetic Nervous System

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Synopsis

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

Bacopa monnieri is an herb traditionally used in Ayurvedic medicine, particularly for its cognitive-enhancing properties. In terms of its effects on the parasympathetic nervous system (PNS), there is some scientific evidence suggesting that Bacopa monnieri can support this body system. Several animal studies and a few small human trials have indicated that Bacopa may exert anxiolytic (anxiety-reducing) and adaptogenic effects, potentially by modulating neurotransmitters and increasing resistance to stress. These effects are thought to promote parasympathetic (rest-and-digest) activity, as opposed to sympathetic (fight-or-flight) dominance.

Research has demonstrated that Bacopa extracts can increase acetylcholine levels in the brain and reduce levels of stress hormones such as cortisol, which is consistent with enhanced parasympathetic tone. Some clinical studies have shown improvements in memory, attention, and stress resilience, which may be partially mediated by parasympathetic activation. However, direct measurement of parasympathetic nervous system activity in humans in response to Bacopa supplementation is limited, and most studies focus on cognitive endpoints rather than specific autonomic markers.

In summary, while traditional use focuses primarily on cognition, emerging scientific evidence provides moderate support (evidence rating: 3) for Bacopa monnieri’s potential to support the parasympathetic nervous system, particularly through stress reduction and neurochemical modulation. More robust, targeted research is needed to clearly define its effects on this specific body system.

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