Broccoli for the brain: a review of the neuroprotective mechanisms of sulforaphane.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing preclinical mechanisms and clinical trials without systematic review or meta-analysis methodology.
PubMed 40686501 · doi:10.3389/fncel.2025.1601366
What was done
This narrative review summarizes emerging evidence on the neuroprotective mechanisms of sulforaphane, a dietary phytochemical from cruciferous vegetables that activates the mammalian NRF2 pathway. The authors synthesize preclinical in vitro and in vivo models alongside ongoing clinical trials in neurodegenerative and neurodevelopmental disorders, focusing on oxidative stress mitigation, neuroinflammation prevention, and dosing dynamics.
What was found
The abstract reports no quantitative values, effect sizes, or trial counts. It qualitatively notes that sulforaphane activates cytoprotective mechanisms to alleviate oxidative stress and neuroinflammation. Preclinical neuronal cell culture models show a hormetic dose response, where low doses consistently confer neuroprotective benefits while higher doses trigger cytotoxic effects.
Why it matters
Sulforaphane represents a potential therapeutic agent for neurological disorders, but successful translation will require precise dose optimization to exploit hormetic benefit while avoiding cytotoxicity.
Limits
As a narrative review, the paper lacks systematic search criteria, quality appraisal of cited studies, and meta-analytic synthesis. The abstract provides no quantitative data from human clinical trials, and therapeutic claims remain heavily reliant on preclinical cell culture and animal models.
Cited by
- supports Sulforaphane activates the Nrf2 cellular stress response pathway.