The first of two of three blogs exploring the renin-angiotensin-aldosterone system in ME/CFS and COVID-19. Warning – this blog is complex… Back in 1997, they had a couple of important things right – orthostatic intolerance (OI) is basically caused by not getting enough blood to the brain when one stands … Continue reading The Renin-Angiotensin-Aldosterone Paradox in Chronic Fatigue Syndrome (ME/CFS) and POTS