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Among its many health benefits, vitamin C helps to boost levels of the energizing brain chemical norepinephrine, which produces a feeling of alertness and increases concentration. This is especially important for those with fibromyalgia [and Chronic Fatigue Syndrome] who experience periods of inattentiveness or “fibro fog” [brain fog].
(Source: Pain-Free Arthritis: A 7-Step Program for Feeling Better Again, by Harris H. McIlwain, M.D., and Debra Fulghum Bruce, M.S. Published by Owl Books and available at http://www.pain-free-arthritis.com.)