Everyone’s talking about vitamin D right now, especially since the Institute of Medicine’s Food and Nutrition Board (FNB) updated their recommended dietary allowance (RDA) for it. The truth is that most Americans are deficient in vitamin D, and studies show that vitamin D supplementation can both prevent and kill many infections and diseases, including cancer.
Vitamin D isn’t actually a vitamin, although scientists refer to it as such. It’s actually a steroid hormone that you get from sun exposure, food sources and/or supplementation. The term refers to either vitamin D2 or D3, but according to the National Vitamin D Council, D3 (chemical name 25-hydroxy vitamin D) is real vitamin D, and is the same substance produced naturally through your skin by sun exposure.
Older research appears at odds on whether your body cares which form of D it’s getting. But a study in the January 2011 Journal of Clinical Endocrinology & Metabolism found that D3 is 87 percent more effective than D2, and is the preferred form for treating vitamin D deficiency. It’s measured in international units (IU’s) in nanograms per milliliter, or ng/mL. The Vitamin D Council believes that a person’s D3 levels should be at least 50 ng/mLfor your body to function properly. (To determine whether you might be deficient, you need to get your vitamin D levels tested, and ideally, you’ll want to get tested regularly thereafter to ensure you’re maintaining optimal levels year-round.)
Depending on your age, the new recommendations are 600 to 800 IUs a day for adults and between zero and 600 IUs a day for children. The FNB also said that taking vitamin D in amounts of 10,000 IUs or more could be dangerous. Seeing that a 30-minute dose of sunshine can give an adult more than 10,000 IUs this number is sure to be raised with further investigation. Currently countless studies indicate that much higher levels of vitamin D are required for optimal health and some have shown that supplements of up to 40,000 IUs a day don’t appear to be toxic. Most studies agree that doses as low as 400 IUs a day are too low to even maintain skeletal health.
Over 1,350 clinical trials on vitamin D are currently being conducted by major drug companies, all based on the prevention or cure of many illnesses and diseases, including 388 for cancer. Yes, cancer. From breast to prostate, to colorectal to brain cancers, and even basal cell carcinoma (skin cancer), Drug companies such as Pfizer and Merck are currently either sponsoring or collaborating on clinical trials based on the premise that vitamin D administered orally, intravenously or topically (for skin cancer) may either prevent or cure cancer. Cancer foundations and institutes are all in on the clinical study game as well, such as the National Cancer Institute and the National Institutes of Health. Even the U.S. Department of Defense and the Department of Veteran Affairs are studying ways to prevent and cure cancer with vitamin D!
Currently, I recommend to patients to take in 4,000 IUs of Vitamin D per day and try to get at least 15 minutes of sunshine. The full benefits of Vitamin D we may not know for many years to come.
