 An appraisal of "biophoton therapy" by the IOCOB notes that biophoton therapy claims to treat a wide variety of diseases, such as malaria, Lyme disease, multiple sclerosis, schizophrenia, and depression, but that all these claims remain unproven.Popp concludes that the complexity of cellular chemical reactions in living systems is such that it excludes the possibility to create a machine to selectively heal systems using biophotons, but there are always people who believe in these "miracles.