I had never heard of that before either but I found this: https://www.sciencedirect.com/science/article/pii/S2211753918301490 https://www.sciencedirect.com/scie

I had never heard of that before either but I found this: https://www.sciencedirect.com/science/article/pii/S2211753918301490 https://www.sciencedirect.com/science/article/pii/S221175391... This one is kidney failure not bleeding around the kidneys but it still surprised me. Microdosing definitely makes it even less likely of course.