The phytochemical namely Indole-3-carbinol present in Broccoli helps in reducing the secretion of apolipoprotein B-100 (ApoB) by 50 per cent and thereby confer cardiovascular benefits. ApoB is the main apolipoprotein of LDL cholesterol which is reponsible for the transport of cholesterol to tissues. It helps in formation of plaque when present in high concentration in the blood vessels. So this how it helps in preventing heart strokes and other cardiovascular diseases.