Description
Vitamin D has well-established hormonal effects, and like other hormones it can act as a “molecular switch” by influencing the expression of multiple genes. One of its major hormonal effects is to regulate calcium’s homeostasis activities in the body. This is of vital importance, since calcium is involved in the functioning of all cells but most cells require only very little of it. Vitamin D helps the body manage calcium homeostasis (keep calcium within healthy ranges in all the body’s cells, tissues and organs). Vitamin D research has hastily expanded into exploring its diverse roles in human health. Vitamin D’s clinically proven bone benefits are directly related to its management of calcium homeostasis and specifically to calcium balance in bone. Calcium balance is essential for bone growth and formation. Vitamin D is essential to ensure healthy control over calcium absorption and the availability of calcium to bone. Multiple studies have shown its improve for healthy bone structure from childhood through old age. The body’s activated vitamin D (25-hydroxy vitamin D3) not only influences bone health but helps improve immune system responses, the heart and circulation, the lungs, the musculoskeletal system and virtually all the body’s other functional systems. It is increasingly becoming clear that optimal vitamin D status may have beneficial affect on longevity. In a recently published prospective study of thousands of elderly men in Sweden, Hong Kong, and the USA, a significant association was found between healthy blood 25(OH)D levels and a healthy lifespan. Recent research also suggests the prevalence of subclinical vitamin D deficiency is increasing worldwide, and this is paralleled by an increasing number of overweight individuals. It has been proposed that being overweight may contribute to lower blood 25(OH)D levels because the storage of vitamin D in adipose tissue decreases its bioavailability. About Doctor’s Best Doctor’s Best produces products with the highest quality raw materials available on the market. They have direct control over and are an integral part of every aspect of product production, from formulation and raw material sourcing to finished product manufacturing. We directly purchase all active ingredients used in our products and use only the highest quality ingredients. Every product is thoroughly researched and backed by the latest scientific studies conducted in the field. The formulations reflect the amounts of ingredients shown to be beneficial based on the results of scientific investigations. Doctor’s Best uses patented, trademarked ingredients backed by scientific studies and clinical research. They never use insignificant quantities to improve the label. Doctor’s Best directly purchases only the highest grade raw materials from proven and reputable suppliers to be put into product formulations. All raw material suppliers go through their stringent vendor qualification process, which includes a multi-step investigation including all aspects of the production and handling procedures, to insure the highest level of quality is reached. |
Details
Size: 60 veggie caps
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Economy shipments destined for locations outside the United States may ship with FedEx International MailService (FIMS). FIMS is a new hybrid service where FedEx delivers the package into your country’s postal system and then your local postal carrier makes the final delivery to you. This provides the best blend between reliability and value, and we pass the savings on to you. Even if your package is on its way to the correct destination in your country, tracking is not available for this service. For more information, please visit the FIMS web site.

This item is brand new, sealed, and guaranteed not to expire in the near future! In fact, we receive new shipments daily direct from manufacturers for maximum longevity. Expiration dates only apply to perishable items.

In most cases, we offer combined shipping discounts if more than one item is purchased from our store at the same time!


- We have a 30-day return policy from date of delivery. If you want to return this item, please send the product in NEW condition and in the original packaging to our distribution center.
- Personal care products and medical products cannot be returned for safety reasons and government restrictions. Please do not send these items back as it is going to result in a forfeit of your refund.
- Charges associated with returning items are the responsibility of the customer unless the item is defective or the wrong item was shipped.
- A credit will be applied to the original payment method used once we receive the item to our warehouse.
- Exchanges are achieved by returning the unwanted item and placing a new order for the correct item.
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