Chlorella is the largest selling health food supplement in Japan where the yearly production is 1.000 tons. After having reviewed the scientific literature it would appear that there are four main components of Chlorella which have been identified to have certain health effects. These are chlorophyll, the cell walls, vitamin A/beta-carotene
and Chlorella Growth Factor (CGF). Chlorella has a number of properties which are helpful to organs and tissue that have been injured by a variety of cause. It is claimed to be a"great normalizer" changing high or low body function back to normal.