Sunlight is the source of life on Earth, but we may not be aware of all the ways it benefits us. Our bodies manufacture vitamin D-3 when the skin is exposed to UV radiation from sunlight, but the ability to do so decreases as we age. Vitamin D-3 maintains healthy calcium and phosphorus levels in the body for strong bones; it increases muscle strength in older adults; and it also plays an active role in a healthy immune response. Vitamin D-3 (cholecalciferol) is the optimal form of vitamin D. It is the form of vitamin D that the body manufactures in sunlight, and the form most efficient for the body’s needs.
New research indicates that our modern indoor lifestyles may lead to a widespread increase in vitamin D deficiency. Nicknamed the “sunshine vitamin” because the body makes it naturally when exposed to the sun, scientists are discovering that vitamin D-3 is an important hormone precursor that supports the immune system and helps regulate the health of at least 20 different tissues, including the brain and joints. It also plays an important role in regulating cell growth, insulin levels and bone formation. Researchers are finding that the current recommended daily allowances of vitamin D—ranging from 200 international units for infants, children and adults up to age 50 years; 400 IU for men and women from 50 to 70; and 600 IU for people older than 70—may be far lower than what is necessary for optimum health.
Deficiency Is Widespread
Vitamin D is not available in most foods (oily fish, egg yolks, liver and cod liver oil have some) but is made when sunlight strikes the skin. Vitamin D insufficiency may be quite common in places far from the equator and researchers estimate that 50% of Americans may have less vitamin D than they need. Today’s teens also have less exposure to direct sunlight and have switched from drinking vitamin D fortified milk to soda. Puberty is a very critical time when up to half of a person’s adult bone mass is being deposited, and vitamin D helps ensure that people have normal blood levels of calcium for this important process. New research estimates that 30 percent of adolescents nationwide may be vitamin D deficient.
Deficiency Risk for African Americans
People of African descent require up to 30 minutes sun exposure three times weekly during summer on the face, arms and hands, while very fair-skinned white people require 5-10 minutes. African-Americans have the highest risk for vitamin D deficiency because dark skin needs 5 to 10 times more sunlight than white skin to produce the same amount of the vitamin. One study found that 42 percent of African-American women in the U.S. were vitamin D deficient. And while the use of sunscreen is imperative for skin health, sunscreen that is sun protection factor 8 (SPF 8) or greater blocks 95% of the UVB light needed for the skin to synthesize vitamin D.
Total Body Vitamin
Vitamin D addresses seven of the twelve SystemiCare deep metabolic systems of the body, systems crucial to vibrant health: Cells/DNA, Inflammation Response, Metabolism, Hormones, Cognition/Nerves, Immunity, and Structure/Connective Tissue.
Healthy Cell Proliferation
Vitamin D research is an emerging area of interest for scientists, who have yet to understand the many roles of this important vitamin in the body. While vitamin D’s main function is to maintain normal levels of calcium and phosphorus in the blood, vitamin D also serves as a hormone precursor. Once it has been converted into its active form, it can enter a cell, cross the nuclear membrane, attach to specific receptors on the DNA or its protein wrapping, and promote cell differentiation. Vitamin D is one of the body’s many control systems, acti
|Suggested Use||1 to 2 tablets daily with a meal.|
*Daily Value not established.
|Other Ingredients||Microcrystalline cellulose and stearic acid.|
|Warnings||If you are pregnant, may become pregnant, breastfeeding, have hyperparathyroidism, or are taking any prescription medication, consult your physician before taking this product. Do not exceed a total of 2,000 IU of vitamin D per day from all sources.|
|Name||Source Naturals, Vitamin D-3 1000 IU 200 Tablets|
|Serving Size||2 Tablets|
|Package Description||200 Tablets|
This is the best vitamin D3 ever! Cheap, amazing quality, onle one tablet per day is required and it has a huge list of benefits: stimulates the production of igf-1, muscle development and fortification, and strengthen the immu system! A bunch of benefits, with such a low price!
Sun light in bagsGreat supplement and value!
Who takes 4 hours of sun daily?!!
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