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Wird Vitamin D überschätzt?
Nach Einschätzung des Robert-Koch-Instituts fehlt 60 Prozent der Deutschen im Winter Vitamin D. Die Deutsche Gesellschaft für Ernährung hält einen Wert von mehr als 30 Nanogramm pro Milliliter Blut für ideal. „Die Wirksamkeit von Vitamin D wird überschätzt“, warnt er.
Wie wird Vitamin D synthetisiert?
Die Vorstufen des sogenannten Vitamin D werden aber vom Körper selbst hergestellt. Im übertragenen Sinne ist also das notwendige „Vitamin“ das Sonnenlicht, das zum im Körper vorhandenem Provitamin 7-Dehydrocholesterol (der Ausgangssubstanz der Vitamin-D-Synthese) hinzukommen muss.
Is vitamin D deficiency affecting your energy?
With most men spending all day indoors, Vitamin D deficiencies are actually quite common. Supplementing with Vitamin D can almost immediately increase energy levels, particularly if low testosterone is the ultimate cause of your low energy.
How to use vitamins to increase energy levels?
The best way to use vitamins to increase energy levels is to use a supplement stack which contains several vitamins as well as other natural energy boosters. This means you will be attacking tiredness on all fronts, which significantly increases your chances of success.
What is the Recommended Dietary Allowance (DV) for vitamin D?
The FDA developed DVs to help consumers compare the nutrient contents of foods and dietary supplements within the context of a total diet. The DV for vitamin D is 20 mcg (800 IU) for adults and children aged 4 years and older [ 26 ].
Is circulating 1 25 OH 2D a good indicator of vitamin D deficiency?
In contrast to 25 (OH)D, circulating 1,25 (OH)2D is generally not a good indicator of vitamin D status because it has a short half-life measured in hours, and serum levels are tightly regulated by parathyroid hormone, calcium, and phosphate [ 1 ]. Levels of 1,25 (OH)2D do not typically decrease until vitamin D deficiency is severe [ 2 ].