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  • Normal vitamin D levels by age, sources, and toxicity
    Generally adequate vitamin D levels in the blood are 20 ng ml or above for adults People aged 1 to 70 years should aim to get at least 15 mcg or 600 IU of vitamin D per day
  • What Are the Normal Vitamin D Levels by Age? - Verywell Health
    According to the National Institutes of Health Office of Dietary Supplements, the average recommended daily intake of vitamin D for most adults, children, and teens is 600 IU, and 400 IU for children 12 months and under
  • Vitamin D Deficiency: Causes, Symptoms Treatment
    Vitamin D deficiency is a common vitamin deficiency that causes issues with your bones and muscles It most commonly affects people over the age of 65 and people who have darker skin It’s preventable and treatable Learn some of the common symptoms of vitamin D deficiency What is vitamin D deficiency?
  • Vitamin D: Whats the right level? - Harvard Health
    At that time, their experts concluded: "Based on all the evidence, at a minimum, we recommend vitamin D levels of 30 ng mL, and because of the vagaries of some of the assays, to guarantee sufficiency, we recommend between 40 and 60 ng mL for both children and adults " But wait, there's more…
  • Vitamin D - Mayo Clinic
    Taking a vitamin D supplement or a multivitamin with vitamin D may help improve bone health The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for people ages 1 to 70 years, and 800 IU for people over 70 years
  • Vitamin D - Health Professional Fact Sheet
    Vitamin D (also referred to as calciferol) is a fat-soluble vitamin that is naturally present in a few foods, added to others, and available as a dietary supplement It is also produced endogenously when ultraviolet (UV) rays from sunlight strike the skin and trigger vitamin D synthesis
  • Normal vitamin D level in the blood - MrLabTest
    What is the normal level of vitamin D in the blood? Why normal levels can differ across different labs? Which values are considered a normal vitamin D in a blood test? What is the role of vitamin D in the body? Vitamin D, also called calciferol, is a fat-soluble vitamin essential for the normal development of bones and teeth
  • Vitamin D - StatPearls - NCBI Bookshelf
    The Endocrine Society, the National and International Osteoporosis Foundation, and the American Geriatric Society define vitamin D deficiency as the level of 25-hydroxyvitamin (25 OH D) of less than 30 ng mL The Endocrine Society recommends a preferred range of 40 to 60 ng mL
  • Understanding Normal Blood Levels of Vitamin D
    Research indicates that the optimal concentration of vitamin D in blood, typically measured as 25-hydroxyvitamin D (25 (OH)D), should fall between 20 to 50 nanograms per milliliter (ng mL) Levels below this range may indicate deficiency, potentially leading to skeletal deformities, osteoporosis, and even increased susceptibility to infections





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