Chlorophyll is found in a large amount in all green plants and is essential to their survival. It is a substance which absorbs energy from the sunlight, thus enabling plants to convert carbon dioxide and water into food. Chlorophyll has been shown to have antiseptic properties and can build up red blood cells; it is regarded as an excellent cleanser and tonic It is thought that the reason some algae, such as chlorella, arc such powerful cleansers is that they contain high levels of chlorophyll. Chlorella has, for example, been used effectively to help treat alcoholism in the IFSA and Italy, Green, leafy vegetables and sprouting seeds are rich in chlorophyll.