Osteoporosis Support Group
Osteoporosis is a disease of bone in which bone mineral density is reduced, bone microarchitecture is disrupted, and the amount and variety of non-collagenous proteins in bone is changed. It is estimated that 1 in 3 women and 1 in 5 men over the age of 50 worldwide have osteoporosis. It is responsible for millions of fractures annually, mostly involving the lumbar...
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Sorry, I don't know anything about the malate version, but found this article for you. It was very interesting to me, especially about the muscle benefits. It looks like a good form (based on this article). And if it's working, I'd keep using it. Best wishes to you.
http://www.livestrong.com/article/280804-what-are-the-benefits-of-magnesium-malate/
Don't know for sure, but here is an article about supplements for migraines. Hope it is helpful to you.
http://www.migrainetrust.org/factsheet-supplements-and-herbs-for-migraine-the-evidence-10897