The Secrets of Vitamin D – Intruduction.

Part 1 — The Secrets of Vitamin D – Why Vitamin D is essential for your Body.

Part 2 — The Secrets of Vitamin D – What Causes Vitamin D Deficiency?

Part 3 — The Secrets of Vitamin D – Vitamin D Deficiency Symptoms.

Part 4 — The Secrets of Vitamin D – The Potential Impact of Vitamin D Deficiency.

Part 5 — The Secrets of Vitamin D – Foods that have Vitamin D.

Part 6 — The Secrets of Vitamin D – How Much Vitamin D you need

Part 7 — The Secrets of Vitamin D – Vitamin D Deficiency Diagnosis and Treatment.

Part 8 — The Secrets of Vitamin D – Conclusion.