Vitamin D, most recognized as necessary for normal immune system function and bone health, has systemic impacts far beyond this. Although it is considered a vitamin (a necessary nutrient found in the diet), vitamin D more closely resembles and acts as a steroid hormone that broadly influences physiology. Vitamin D receptors are found in more than 36 tissue types of the body, and have been shown to influence the expression of thousands of genes, including those associated with expression of detoxification enzymes.* Vitamins K and D have interdependence in metabolic functions, as vitamin K plays a role in directing calcium deposition to the bone matrix, and insufficiency may be associated with soft tissue calcification and lower bone mineral density.* *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.