Technically, it’s not really a vitamin. It’s in a class by itself. The active metabolic product of Vit D is 1,25 dihydroxy vitamin D, a secosteroid hormone. Every cell in the body has a receptor for it and it affects over 1000 genes.
Vitamin D deficiency is a big problem. It’s found in all ages and is especially prevalent in African Americans. 36-57% of Americans are Vitamin D deficient 
Vitamin D is critical for good health and protection from disease. Healthy serum levels are in the 30-105 ng/ml range. It’s a myth that you can get adequate amounts with 15 minutes in the sun every day. You cannot.
Here’s why Vitamin D is so important. It reduces your risk of:
- Cardiovascular disease and heart attack
- Cancer, including colon, breast, ovarian and renal 
- Falls in women (neuromuscular control)
- All fractures
- Multiple sclerosis
- Non-Hodgkin’s lymphoma
- Type 1 diabetes
- Contraction of influenza
- Alzheimer’s disease, dementia
How to supplement with Vitamin D:
First, choose a pharmaceutical grade brand such as Metagenics or Xymogen. Note that each 100 IU of Vit D3 intake increases serum 1,25(OH)D by 1 ng/ml over the course of several months.
I take 5000IU of D3 daily for maintenance of healthy serum levels.
Go to Metagenics Store to find medAge-approved Vitamin D supplements.
Contact us at medAge for more information on Vitamin D and other nutritional supplements and healthy lifestyle coaching. 828-684-1212
To Your Optimal Health! Dr. Laura
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