Things to Look for in a Vitamin D Supplement

Vitamin D:

Important for a healthy immune system and an important part of healthy bones, teeth along with brain health. A deficiency in this is common for almost anyone so this test is valuable. Supplementation may be necessary if someone is low. 2000 IU is a good amount but if someone is deficient, they may need to take a therapeutic dose until it is normal and then the amount to keep it normal could be higher.