Fisetin activates multiple neuroprotective pathways beyond its senolytic activity: it increases BDNF (brain-derived neurotrophic factor) via Erk1/2-CREB signaling, reduces glutamate-induced excitotoxicity, enhances glutathione levels in neurons, and inhibits neuroinflammatory cascades. These mechanisms support its use not just for aging but also for acute cognitive stress.

Does fisetin increase BDNF in humans?

Human BDNF data from fisetin supplementation is limited but mechanistically supported. BDNF levels are measurable in blood (though peripheral BDNF may not reflect central BDNF). Some users track serum BDNF as a biomarker.

Can fisetin improve focus and memory acutely?

Some users report acute cognitive benefits. The mechanistic basis exists (ERK/CREB activation, MAO inhibition) but robust acute human trials are lacking. Effects are more likely cumulative with regular use.