18 months after suddenly becoming bed ridden with "CFS" with minor IBS and visiting numerous doctors who couldn't help I went to an amazing Dr. at the Center for Digestive Diseases in Sydney Australia. He diagnosed me with having an unusual gut parasite called D.fragilis. Not only is this bug hard to test for but until recently it wasn't thought to be parasitic, however after getting treated for it I started to come back to life. After treatment I didn't make a full recovery as my gut flora had become badly damaged so I recently underwent a fecal transplant and it has been amazing. Nearly all my gut symptoms are gone and my energy is slowly coming back. So for anyone who is suffering CFS with gut symptoms I would recommend checking out the http://www.cdd.com.au/ website and maybe even making an appointment (international clients can do a phone consult.) The Center for Digestive Diseases is a research and treatment center and the physicians there are about the best in the world. If you have CFS and IBS, even minors IBS symptoms you could have an undiagnosed gut bug (bacterial, parasite, viral or fungal) which has not been picked up by previous testing and even if you don't you may have a gut flora imbalance which can also cause CFS symptoms. So please everyone DON'T UNDERESTIMATE THE GUT! Hope this helps someone find a cure.