Just to add to this, hydroxy-25 levels alone are not enough. Hopefully everyone's doctor also advises them what is a normal level for a healthy person and under

Just to add to this, hydroxy-25 levels alone are not enough. Hopefully everyone's doctor also advises them what is a normal level for a healthy person and understands that people that are obese or have insulin resistance will deplete D3, C and Zinc faster due to the heavy load on their innate immune system dealing with low grade inflammation.