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If low vitamin D status is confirmed, an appropriate, large enough vitamin D dose must be suggested for supplementation, and the next check of serum 25-hydroxy-vitamin D levels should be advised after the treatment in order to evaluate treatment results and choose the right tactic regarding further supplementation.
- Vitamin D: Production, Metabolism and Mechanisms of Action
The level of vitamin D intake and achieved serum levels of...
- Vitamin D: Production, Metabolism and Mechanisms of Action
The concurrent presence of fat in the gut enhances vitamin D absorption, but some vitamin D is absorbed even without dietary fat. Neither aging nor obesity alters vitamin D absorption from the gut . Serum concentration of 25(OH)D is currently the main indicator of vitamin D status.
31 Δεκ 2021 · The level of vitamin D intake and achieved serum levels of 25(OH)D that are optimal and safe for skeletal health and the non-skeletal actions remain controversial, but are likely between an intake of 800-2000IU vitamin D in the diet and 20-50ng/ml 25(OH)D in the blood.
9 Απρ 2023 · The Endocrine Society recommends a preferred range of 40 to 60 ng/mL. In contrast, the National Institute of Health defines vitamin D deficiency as less than 20 ng/ml. Some authorities define insufficiency as 12 to 19 ng/mL and deficiency as less than 12 ng/mL.
Vitamin D is a nutrient you need for good health. It helps your body absorb calcium, one of the main building blocks for strong bones. Together with calcium, vitamin D helps protect you from developing osteoporosis, a disease that thins and weakens the bones and makes them more likely to break.
14 Μαρ 2023 · Though more research is needed, it seems that consuming 1,000–4,000 IU (25–100 mcg) of vitamin D daily should be ideal for most people to reach healthy vitamin D blood levels .
With vitamin D deficiency, as little as 10% of ingested calcium may be absorbed. Thus, calcium excretion would be low (only 50 mg for a dose of 1000 mg). Although cumbersome, 24-hour urine calcium excretion is an effective test to assess adequacy of both calcium and vitamin D intake.
