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Vitamin D3 can be synthesized by humans in the skin by exposure to ultraviolet B (UVB) radiation from sunlight. However, especially during the winter months and in dull weather conditions, or in the summer, when we use sun-block, the body´s ability to produce sufficient vitamin D3 may be inhibited. In such circumstances, it might be wise to take a daily vitamin D3 supplement. Vitamin D has long contributed significant support for healthy bone density. More recently research has demonstrated that nearly every tissue and cell type in the body has receptors for vitamin D. It plays an important role in the regulation of healthy cell-division and differentiation and has considerable effects as an immune system regulator - possibly providing support against such disorders as the common cold. It appears to reduce the risk in women of developing rheumatoid arthritis. It may also lower the risk of developing multiple sclerosis, help maintain healthy body weight and cognitive function, reduce the symptoms and frequency of asthma attacks, protect from damage from low levels of radiation, and lower the risk of developing cancer or suffering a heart attack.
At present the RDA (recommended daily allowance) is 600 IU (international units). However Vitamin D3 deficiency appears to have become more widespread in recent years, so that nutritional scientists are suggesting that the RDA should be raised to 1,000 IU or even higher. Currently most experts believe that an intake of between 1,000 and 10, 000 IU per day will lead to levels above those indicative of vitamin D deficiency. Life Extension suggests supplementation with at least 2,000 a day, while the elderly may need higher doses between 5,000 IU and 10,000 IU.
A blood test can determine how much vitamin D is needed to achieve an optimal 25-hydroxy vitamin D blood level of 50 - 80 ng/mL
Individuals consuming more than 2,000 IU/day of vitamin D (from diet and supplements) should periodically obtain a serum 25-hydroxy vitamin D measurement. Do not exceed 10,000 IU per day unless recommended by your doctor. Supplementation with Vitamin D is not recommended for those with high blood calcium levels. If you have a thyroid condition or are taking anti-thyroid medication, consult your doctor before supplementing.
Vitamin D3 1000 IU can be ordered online. Prompt delivery assured.