...... to what clinical nutritionist Dr Wright calls the "tropical optimum" ie the amount of Vitamin D you would naturally get via sunlight if you lived in the tropics. He advocates a minimum of 5000 IU a day for those of us in more temperate climes. This is backed up by new research from the University of California, San Diego carried out over a five year period on 3600 adult participants. This involved Vitamin D blood level measurement and completing a questionnaire twice a year detailing their nutritional and supplement intake, sun exposure and general health status. Results showed that adults need 4,000 to 8,000 IU of vitamin D daily to cut their risk of certain cancers and other diseases by half.
Now some people would say that 8000 IU a day is a very high level of intake. But the fact is that with just 30 minutes of full body exposure to sunlight, your body produces at least 10,000 units of vitamin D. So if 8,000 IU were harmful, we'd see lifeguards, gardeners, and football players etc - all those working or playing in the sun - dropping like flies from Vitamin D toxicity - but that is not the case. So why is it that most supplement preparations do not contain these levels, you ask? It is a good question, but read why in my next blog entry....
To your abundant excellent health,
Dr Ike
Holistic Health Coach and Functional Health Expert
Sources:
- Health Sciences Institute
- Nutrition and Healing Newsletter
-"Not Enough Vitamin D May Boost Depression Risk" Stephen Daniells, NutraIngredients-USA, 5/14/10, nutraingredients- usa.com
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