Taking 120 micromoles of sulforaphane daily for one year did not lead to severe side effects in former heavy smokers.
Mechanism
Synthesis from 1 study
Sulforaphane turns on the body's natural cleanup system in the lungs, helping remove harmful chemicals from smoking without causing serious side effects. This system reduces cell damage and abnormal growth, which explains why no severe problems occurred during long-term use.
Most probable mechanism
Sulforaphane enters the body through the gut, travels to the lungs, and turns on a natural defense system that cleans up harmful chemicals and repairs damaged cells. This system reduces the number of damaged cells that could become cancerous, without causing serious harm to the body.
Sulforaphane is absorbed from the gastrointestinal tract and distributed to bronchial epithelial cells
Sulforaphane modifies specific cysteine residues on the Keap1 protein, preventing it from tagging Nrf2 for degradation
Stabilized Nrf2 translocates to the nucleus and binds to antioxidant response elements, activating transcription of detoxification and cytoprotective genes
Upregulated genes increase production of enzymes that neutralize reactive oxygen species and detoxify tobacco-derived carcinogens
Reduced oxidative DNA damage and suppressed proliferative signaling lower the rate of abnormal cell division in bronchial epithelium
The absence of severe adverse events reflects the body's ability to tolerate sustained activation of this detoxification pathway without systemic toxicity
Evidence from Studies
Supporting (1)
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Contradicting (0)
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