There is no official statement from the FDA on carrageenan. However, many people have bad reactions to it when it is consumed. It is extracted from red seaweed. Living-Deliberately.com states that it is not natural due to powerful alkali solvents being used to extract it from the seaweed. Still not sure about it? Consider this - carrageenan is used to de-ice frozen airplanes sitting on tarmacs during winter storms.