The chlorophyll craze which has been sweeping ... some researchers fear that they may release a group of compounds called porphyrins. If porphyrins get into the bloodstream, they can make a ...

A porphyrin is a dye-type molecule, like the iron porphyrin that binds molecular oxygen in the heme protein of red blood cells, or the chlorophyll that promotes photosynthesis in green plant cells. In ...