Good point, although can be hard to form a conclusion. Perhaps diabetes is often mediated by parasitic or fungal infection, for example, and the mebendazole helped manage that. Anyway, the effect of Vermox/mebendazole on my CFS symptoms was dramatic and started about 4 hours after the first dose. So whatever it does, it works quickly. When this happened to me, I believe about 1998, there was little info about parasites in CFS. Then in 2000 Dr.Larry Klapow discovered a novel roundworm in the lungs of CFS patients that he named Cryptostrongylus pulmoni (C.pulmoni). He actually patented a treatment, cured a few CFS patients, got little support and I believe eventually gave up on CFS research... So I have wondered whether the Vermox somehow stopped C.pulmoni activity, or something like that. Who knows...we get so little help and there are many good leads like this that are forgotten.