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 rapidly 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 support 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 support immune system responses, the heart and circulation, the lungs, the musculoskeletal system and virtually all the body's other functional systems. It is incregly becoming clear that optimal vitamin D status may have beneficial impact 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 increg worldwide, and this is paralleled by an increg 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.

During the summer months products may arrive warm but stores and ships products in accordance with manufacturers' recommendations, when provided. Clinically proven - Vitamin D is essential to ensure healthy control over calcium absorption and the availability of calcium to bone. Multiple studies have shown its support for healthy bone structure from childhood through old age. Benefits - Vitamin D3 is beneficial for supporting bone health, immune wellness, cardiovascular function, and for cellular gene regulation and metabolism. Vegan D3 - The Vitashine D3 in best vegan D3 is sustainably harvested and registered with the prestigious UK Vegan Society. Doctor's best vegan D3 features vitashine D3 - a plant source of vitamin D3 (cholecalciferol), the superior form of supplemental vitamin D. Needed for the body to regulate phosphorus and calcium levels for bones, teeth and heart protection. Vitamin D3 is produced in the skin by absorbing the sun’s UV rays and is obtained from food in limited amounts. Sun protection and climate factors may influence low Vitamin D3 levels.

Best Sellers Rank: See Top 100 in Health & Household. Unit Count: 2.00 Count. Age Range (Description): Adult. Flavor: Unflavored. Item Form: Capsule. Brand: Doctor's BEST. : B01K7X2NUE. Manufacturer: dr best. Date First Available: August 11, 2016. Package Dimensions: 3.7 x 3.3 x 2.1 inches; 2.4 Ounces.