Great questions. I put most of my thoughts and analysis on the matter in this thread that was closed. If you search my name in the thread all the posts will show up. Never got a thoughtful rebuttal. I don’t share the same opinion as Rouzier, Nichols and the “what U-shape trend between Hct and mortality rate?”
Blood viscosity is a complex function of multiple blood parameters so you better be sure of your individual health status before running Hct above 50. In the post below I show why Hct of XX can mean a very different serum viscosity for two different people.
If you can keep blood pressure low and RHR decent on high levels of AAS then be thankful and that’s still not the end of it. Autonomic dysfunction is a real thing, and what happens in a few years down the road when one wakes up one night with atrial fibrillation? Do you have preexisting arrythmia or thyroid issue? Think cumulative effects. It happens.