What it's actually good for
Sulforaphane is a sulfur-rich compound produced when cruciferous vegetables — particularly broccoli sprouts — are chewed or processed. Its primary mechanism is activation of the Nrf2 transcription factor, which upregulates the body's endogenous antioxidant and detoxification enzymes. Human trials suggest it may modestly improve fasting blood glucose, reduce oxidative stress markers, and support cellular defense mechanisms relevant to metabolic health and neuroprotection. The evidence is promising but still maturing, with most human studies being short-term and moderate in size. Bioavailability varies significantly between supplement forms, making product selection important.