New imaging technique shows demyelination

Calcium supplements (and their effects) are something different when talking about calcium ion channels. Ion channels are little pores that open and close at the molecular level on the membranes of cells, depending on the "cell potential" (controlling the electrochemical voltage of the cell). And, there are several different types (i.e. sodium, potassium, calcium, etc). They direct certain molecular particles, that have a specific purpose (usually involving transportation of electrical signals, like in the brain, peripheral nervous system and heart). When there is neurotoxicity (sometimes also referred to as cytotoxicity), there is an inordinate, and inappropriate, influx of calcium IONS - little molecular sized particles of calcium that are directed through the channels in the wrong direction, or at a severely increased rate (also called "upregulation") because of mixed up chemical signals at the molecular level that leave the channels open instead of closing when the appropriate "cell potential" is reached. Exactly WHAT mixed up signals . . . no one knows for certain yet. But, rest assured, the supplements are still important as a daily regimen. Especially the calcium and vitamin D if you are taking steroids (which can facilitate leading to osteoporosis). So, taking more calcium won't cause more calcium to build up in the neurons, any more than eating more vegetables will turn you into a salad. They aren't related that way.

There is still a big argument in the scientific community about vitamins and antioxidants, about whether or not they really work. Well . . . on the side of caution, since most have been proven to be fairly safe to take, then what's the harm. Except a little less in the wallet.