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A compound found in vegetables like broccoli, cabbage and cauliflower, may protect arteries from disease by boosting a natural defence mechanism, says a new study from the UK. Researchers from Imperial College London (ICL) report that sulforaphane, a compound most widely associated with broccoli, may activate a protein called Nrf2 in arteries, according to findings published in Arteriosclerosis Thrombosis and Vascular Biology. While the protein is normally protective, in areas of arteries that are susceptible to disease the London-based researchers found that Nrf2 is inactive.