β-Carotene is a phytochemincal in the class of Carotenes, belonging to the group of Carotenoids (tetraterpenoids), found abundantly in in dark, leafy greens and red, orange and yellow fruits and vegetable. Health Benefits 1. Lung cancer in smokers In the review of ATBC study, the CARET study, the Antioxidant Polyp Prevention trial, and the E3N …