Have MG, osteoporosis etc. Broke 3rd meta on both feet, camboots. Worried MG will flare. Blood calc. 9.4. Broke just walking. Why? How do keep MG ok?

Myasthenia gravis? Osteoporosis (blood Ca does not correlate) is typically a result of both: (a) limited activity combined with (b) poor calcium absorption & deposition into bones to solidify them. (b) is very dependent of vitamin D3 concentration. Yet D deficiency is the 1 common vit. deficiency in the US (healthy upper normal in the 70-80 ng/ml range by blood test) & most vit D supplements are poorly effective.