I have FM for over 12 years now, I've read numerous books, I belong to the National Fibromyalgia Network, The Fibromyalgia Association, and follow the latest research on many aspects of FM. These include, medical and pharmaceutical research.
There is NO evidence that people with FM have brains that age faster. There is a neurological aspect to FM that can affect our brains. Our neurotransmitters may not be firing right to put it simply.