Vitamin D
82% of men and 91% of women are below the recommended levels for vitamin D intake (National Consumption Study II, Federal Ministry of Nutrition). Young adults, adolescents, and older adults are often undersupplied. Undersupply can manifest in fatigue, pain, and an increased risk of osteoporosis and other diseases.
A regular vitamin D test helps measure the concentration of 25-OH-vitamin-D (vitamin D3) in the blood. This test can determine if there is an undersupply, for example.
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Fragen und Antworten zu Vitamin D
What is the respective laboratory value?
Vitamin D is a fat-soluble vitamin that is produced in the skin through sun exposure and is also obtained through the diet. The laboratory value measures the concentration of vitamin D to assess the body's supply status.
For whom is such a test to be considered?
A vitamin D test is recommended for: People with muscle weakness or bone pain Persons with chronic fatigue or exhaustion People with low sun exposure (e.g. office work, living in northern regions) People with dark skin (reduced vitamin D production) Older people (declining skin synthesis) Pregnant and breastfeeding women Persons with osteoporosis or chronic diseases (e.g. autoimmune diseases, diabetes)
What is it used for?
The test serves to detect a vitamin D deficiency or an overdose. Vitamin D is essential for calcium and phosphate metabolism and contributes to bone health, muscle strength, and immune defense. A deficiency can increase the risk of osteoporosis, infections, and chronic diseases.
What can be inferred from that?
A low value indicates a deficiency that can be due to insufficient sun exposure, improper nutrition, or diseases such as malabsorption disorders. Symptoms of a deficiency are: Bone and muscle pain Muscle weakness and risk of falls Increased risk of infections An elevated value, usually due to excessive intake of vitamin D supplements, can lead to nausea, confusion, and calcium deposits in organs.
What is the ideal time for a test?
A test is possible all year round, but is particularly useful in winter and spring when the body's own stores are depleted due to lack of sun exposure. Persons with risk factors or symptoms of deficiency should be tested regularly. The test can be carried out at any time of the day and is independent of food intake.
Particularly interesting?
Vitamin D is taken in two forms: D2 (ergocalciferol) from plant sources and D3 (cholecalciferol) from animal sources or through sunlight. D3 is better utilized by the body. Supplementation should be done under medical supervision, as overdosing can lead to health problems. The body's own production of vitamin D depends on factors such as skin type, age, geographic location, and season.