This is the simplest way to return your vitamin D level to where it should be. If your working life happens indoors and full body skin exposure to sunlight simply doesn’t happen often enough, then lemon-flavoured melting tablets come to the rescue with each containing 2,000 IU of cholecalciferol (vitamin D3). There are 120 melts in the wee jar, a total of 240,000 IUs.
In the body vitamin D contributes to numerous biological functions including normal function of the immune system, it also plays a role in cell division. Not surprisingly then that vitamin D supports breast health, ovarian health, colon health but also blood sugar regulation and of course bone strength. That is why vitamin D is one part of our approach.
In respect of safety it is useful to keep in mind that your body can produce 10,000 to 25,000 IUs of vitamin D after a bit of full body sun exposure when the sun is high in the sky. The more sun rays reach your skin at a slant, the less they trigger vitamin D production. Vitamin D toxicity, where vitamin D can be harmful, usually happens if you take 40,000 IU a day for a couple of months or longer.
Vitamin D is important because contributes to many very important functions within the body:
• The normal function of the immune system
• The maintenance of normal muscle function
• The maintenance of normal teeth and bones
• Supports the process of cell division which is involved in every single cell in the body
• The normal absorption and utilisation of calcium and phosphorus in the body (the mineral balance within the blood, cells and bone)
• The maintenance of normal blood calcium concentrations
|IU/day||Vitamin D Council||Endocrine Society||Food & Nutrition Board (USA)|
|Infants||1000 (upper limit 2000)||400-1000 (upper limit 2000)||400 (upper limit 1000-1500)|
|Children||1000 (upper limit 2000) per 25lbs of body weight||600-1000 (upper limit 4000)||600 (upper limit 2500-3000)|
|Adults||5000 (upper limit 10000)||1500-2000 (upper limit 10000)||600 but 800 for elderly (upper limit 4000)|
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- Holick MF. Photobiology of Vitamin D. In Vitamin D, Third Edition, by Feldman D, Pike JW and Adams JS. Elsevier Academic Press, 2011.
- Institute of Medicine, Food and Nutrition Board. Dietary Reference Intakes for Calcium and Vitamin D. Washington, DC: National Academy Press, 2010.
- Plum LA and Deluca HF. The Functional Metabolism and Molecular Biology of Vitamin D Action. In Vitamin D: Physiology, Molecular Biology and Clinical Applications by Holick MF. Humana Press, 2010.
- Reichrath J and Reichrath S. Hope and challenge: the importance of ultraviolet radiation for cutaneous vitamin D synthesis and skin cancer. Scandinavian Journal of Clinical and Laboratory Investigation, 2012.
- Smolders J, Hupperts R, Barkhof F, Grimaldi LM, Holmoy T, Killestein J, Rieckmann P, Schluep M, Vieth R, Hostalek U, Ghazi-Visser L, Beelke M. Efficacy of vitamin D(3) as add-on therapy in patients with relapsing-remitting multiple sclerosis receiving subcutaneous interferon beta-1a: a Phase II, multicenter, double-blind, randomized, placebo-controlled trial. J Neurol Sci. 2011 Dec 15;311(1-2):44-9. Epub 2011 May 28.
- Tang, JY and Epstein Jr, EH. Vitamin D and Skin Cancer. In Vitamin D, Third Edition by Feldman D, Pike JW, and Adams JS. Elsevier Academic Press, 2011.
- Terushkin V., Bender A., Psaty E.L., Engelsen O., Wang S.Q., Halpern A.C. Estimated equivalency of vitamin D production from natural sun exposure versus oral vitamin D supplementation across seasons at two US latitudes. J Am Acad Dermatol. 2010 June; 62 (6): 929.e1-9.
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