alyLeoNCali
Well-known member
Hi from an old-timer.Here to share a weblink I just came across that provides a friendly, fairly simple description of how muscles work. In fact, I noticed, the webpage was written by an acquaintance of mine!Another friend recently shared info with me about the female hormone progesterone. Hearing that progesterone may protect the myelin sheath on nerves, she asked whether a hormone imbalance (low progesterone) might be a cause of BFS. For example, demyelination (loss of the myelin) is related to the muscle weakness associated with MS.Based on what little I've pieced together, though, BFS doesn't seem to affect our nerves (good news, I'd say). Rather, the BFS symptoms have something to do with the calcium ion channels in the muscles themselves. Below is the "short" explanation that I came up with.There are some real medical sharpies on this board who believe BFS is caused by a calcium ion channel problem (possibly immune-triggered and also possibly permanent) in the muscles. Nerve cells send neurotransmitters to the muscles, to tell the muscles to work. To contract and then relax, a muscle relies on its calcium system: A Ca gate opens, the Ca ions flow through channels, and the muscle contracts; then the Ca gate closes, and a pump relocates the Ca back to its starting point within the muscle.So it seems that if the calcium gate doesn't close efficiently, or if the pump doesn't work efficiently, the muscle contracts properly but just won't completely relax afterward. This explanation fits with experience in that I don't have any actual weakness (even if it occasionally feels like it). It even fits with my wacky observation that at least some of the people on the board notice that they've gotten thinner and/or more muscular. I mean, it makes sense if your muscles are constantly working overtime.Anyway, I've been twitching, etc., for more than 4 years now. This BFS crap hasn't gone away, but I hardly ever notice it anymore. Hoping you all can feel at least as good!--alyLeoNCali