vitamin D; not a vitamin but a hormone, extremely important for the whole body; buy it in the form of (cholecalciferol) and the dose for adults is from 1000 to 2000 IU daily specially if you live in cold wheather
Vitamin D Deficiency Symptoms & Sources to Reverse it!
The US has a Vitamin D Deficiency! Vitamin D Deficiencies have no symptoms and severe consequences, as low Vitamin D levels are associated with health issues and disease. Lose weight while you sleep iu a day!
Vitamin D3 Deficiency Symptoms - Skin, Thyroid And Neurologic Links
12 Common Diseases Caused by Vitamin D Deficiency(**im extremely deficient and with a form of lupus I'm "not" suppose to be in the sun nor like the D foods well the popular foods. So I'm on d supplant and a close watch-Amber)
Vitamin D Deficiency Symptoms, Causes & Treatments