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Edible mushroom whose hericenones and erinacines may stimulate nerve growth factor (NGF) synthesis, theoretically supporting neuronal health.
Human evidence is thin and preliminary. Most-cited support is a small 16-week Japanese RCT in older adults with mild cognitive impairment showing improvement that faded after stopping. A 2023 Nutrients pilot RCT (n=41 young adults, 1.8 g/day) found faster Stroop performance 60 minutes after a single dose and a weak trend toward lower stress at 28 days, but null results on most cognitive measures. Trials are small, short, and use varied extracts; benefits in healthy people are not established.
Commonly 1.8-3 g/day of fruiting-body extract in trials; no consensus effective dose for healthy adults.
Educational summary of doses studied — not a recommendation. Talk to a clinician before starting any supplement.
Educational summary of published research, checked against primary sources and linked inline. Not medical advice; supplements are not FDA-evaluated to treat disease. See our editorial policy.