An excess of anything is not good. The point is that insufficient supplementation leaves most people far below the optimal blood level of vitamin D, typically e

An excess of anything is not good. The point is that insufficient supplementation leaves most people far below the optimal blood level of vitamin D, typically even in a hazard zone, and doctors do absolutely nothing to address the situation. As the definitive case in point, they maintain the formal requirement at 600 IU which shows their intent to kill everyone who isn't better informed.