Here's a good-ish article on bloodletting in the modern age: https://www.artofmanliness.com/articles/the-potential-benefits-of-bloodletting-yes-bloodletting/ ht

Here's a good-ish article on bloodletting in the modern age: https://www.artofmanliness.com/articles/the-potential-benefits-of-bloodletting-yes-bloodletting/ https://www.artofmanliness.com/articles/the-potential-benefi... TLDR: There are correlations that it reduces circulating iron, circulating cancer cells, arterial hardening, decrease insulin sensitivity, and it increased metabolism. Not a lot of super firm evidence though