We know that Lead in blood at least shows symptoms, what does Lead in bones, spine and marrow do?
A) Keep the medico mafia busy with autoimmune diseases.
However, it DOES allow one to control the amount of Lead coming out at one time. So if we go back to NORMAL recommendation, pre 4000-30000IU per day, we get <1000IU.
This also kind of validates the Marshal protocol, where high D3 has show to cause autoimmune issues. Personally I will make sure I get 600IU per day with some Silica to aid the kidneys: