Look into gut dysbiosis, leaky gut syndrome, candida, gluten intolerance
and food allergies. Carbs
in general are offensive and
in FMS they contribute greatly
in muscle toxicity, resulting
in pain, fatigue and perhaps
linked to brain fog ,anxiety,neurological symptoms, cognitive issues and g/i issues.
On your own you can do Dr. Coca's Pulse Test for Allergies and Reactions-
-even hidden or delayed-regarding anything ingested. Free download.
Try an elimination diet, alternatively.