http://www.sciencedaily.com/releases/2011/12/111214144751.htm While this article is not about POTS, the heart brain connection is clearly there. What if the salt that is suggested is acting in a way other than increasing blood volume? "Brain sends wrong message to heart "We showed that the heart problems were actually secondary to nervous system deficits and that cardiac activity can be remolded by abnormalities in brain activity," said Neul. "Basically, the brain is sending the wrong message to the heart leading to the malfunction." Taking a closer look at the heart cells affected by the ner