I remember reading that autoimmune diseases are more common in people descended from regions that survived the bubonic plague, and that it’s believed this is be

I remember reading that autoimmune diseases are more common in people descended from regions that survived the bubonic plague, and that it’s believed this is because the survivors of the plague had mutations which meant they had a more active immune system. https://www.health.harvard.edu/blog/genes-protective-during-the-black-death-may-now-be-increasing-autoimmune-disorders-202212012859 https://www.health.harvard.edu/blog/genes-protective-during-...