Avocados lower cholesterol and dilate blood vessels. Avocados contain a nutrient called glutathione, which blocks carcinogens while helping the liver detoxify synthetic chemicals. You Might Also Like Cabbage January 14, 2014 Bilberry herb December 19, 2013 To get more lycopene out a tomato or tomato sauce, cook it in a bit of oil January 20, 2015