@diverdown1 thank you so much for posting this article. One of the most interesting things I read was this: "Recently, a study of twenty POTS patients following time-restricting eating for six months demonstrated improvements in upright heart rate, energy, and mitochondrial/metabolic function." (quote from Page 4). When I looked up that study, I learned that the participants restricted their eating to an 8-10 window each day for 12 weeks. It is worth a try I think.