When is a vitamin D deficiency present?

The currently best, but almost the only, early indication of a vitamin D deficiency is too low a blood count. For this purpose, a precursor of vitamin D must be determined in the blood serum, the 25-OH-vitamin-D3. That is still consensus in the scientific and health expert group of experts.

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Things look different when it comes to the critical values ​​that are considered critical. The German Nutrition Society continues to consider that a blood count of more than 20 ng / μl (50 nmol / l) is sufficient, in agreement with the American Institute of Medicine and the Food and Nutrition Board. Not an increasing number of renowned and serious experts and institutions. Their assessment of the vitamin D supply status looks more like this:

The alternative guideline values

  • <11 ng / ml (27.5 nmol / l): serious risk of bone disease (rickets in infants and toddlers or osteomalacia in adults)
  • <20 ng / ml (50 nmol / l): long-term health-threatening deficiency (not necessarily bone damage)
  • 20-30 ng / ml (50-75 nmol / l): relative deficiency
  • 30-60 ng / ml (75-150 nmol / l): good and safe supply situation
  • > 88 ng / ml (220 nmol / l): oversupply
  • > 150 ng / ml (375 nmol / l): danger of poisoning
  • > 280 ng / ml (700 nmol / l): serious disturbances of calcium metabolism expected

A severe acute or chronic vitamin D deficiency is also noticeable by various signs. High grade deficiencies, which are visibly and noticeably on the bones, are fortunately quite rare in this country. However, they are apparently only the tip of the iceberg, as numerous scientific studies increasingly illustrate. A very massive iceberg that probably includes many different diseases.

Author: Dr. Hubertus Glaser