Vitamin D Secrets – Discover the truth about vitamin D and exactly what you need to do to deal with a deficiency for a healthier life! Vitamin D Secrets is a new powerful report that explains to the reader what vitamin D really is and why it is so important to their health no matter what age they are. Readers of the report will learn that the experts estimate around a billion people across the world are deficient in vitamin D and this poses a severe health risk.