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Vitamine D beïnvloedt genen tegen kanker en auto-immuunziektes*
Uit een studie door de Oxford universiteit blijkt lage bloedwaarden vitamine D wel eens de belangrijke oorzaak kunnen zijn bij ernstige ziektes zoals kanker en auto-immuunziektes. Voldoende vitamine D is belangrijk voor een goede gen-expressie en van vitaal belang om deze ziektes te voorkomen. De onderzoekers adviseren om voldoende vitamine D in te nemen en regelmatig de bloedwaarden te laten controleren. 15 minuten volle zon in de zomer kan voor wel 500 mcg vitamine D productie in de huid zorgen. Voor de meeste mensen is daarom, zeker buiten de zomer om, dagelijks wel 125 tot 250 mcg vitamine D nodig om goede bloedwaarden tussen de 50 en 80 ng/ml te verkrijgen.
Vitamin D May Influence Genes for Cancer, Autoimmune Disease
Findings could underscore why deficiency plays role in host of serious ills
A new study out of Oxford University pinpoints vitamin D deficiency as a culprit in serious illnesses like cancer and autoimmune disorders. According to the report, which was recently published online in the journal Genome Research, genetic receptors throughout the body need adequate vitamin D levels to prevent these and other serious illnesses from developing.
Multiple sclerosis, diabetes, rheumatoid arthritis, Chron's disease, leukemia -- these and many more diseases are often caused by a lack of vitamin D. Your genes literally have receptors that need vitamin D in order to properly express themselves. If there is not enough of the vitamin, serious illness is prone to develop.
The Oxford team made specific observations about the importance of vitamin D in the genome regions associated with autoimmune diseases and cancer, noting that the nutrient is absolutely vital in helping to prevent these diseases from forming.
"Considerations of vitamin D supplementation as a preventative measure for these diseases are strongly warranted," expressed Sreeram Ramagopalan, author of the study.
However, current recommendations for vitamin D intake are unacceptably low, and many nations are considering updating their guidelines. The U.S. Institute of Medicine, for example, recommends getting a mere 200 to 600 international units (IU) of vitamin D a day, an amount far too low to have much therapeutic effect.
Since summer sun exposure creates about 20,000 IU of vitamin D in the skin in just 15 minutes, supplementation with at least 5,000 to 10,000 IU of vitamin D daily, particularly during the winter, is preferable. Healthy blood levels of vitamin D are somewhere between 50 and 80 nanograms per milliliter (ng/ml), so many natural health professionals recommend having a "25 OH Vitamin D" blood test performed to check these levels.
Het artikel. (September 2010)