Like all of you, I have this condition, too. For probably 10+ years. It comes on for no apparent reason. I am a very healthy and active 60-year-old woman (feel like 40). I am thin and athletic, take vitamins daily (a good multivitamin with minerals, Super B, Vit C w/rosehips, 1200 mg of calcium + D. I'm also on thyroid medicine (Levoxyl, .075) for hypothyroidism and my TSH is in range and I'm feeling great. I exercise: power walking, push ups, yoga stretches, an occasional run.