Vitamin d normal range

We know we need vitamin D: It contributes to healthy muscles and bones and also plays a role in our mental well-being. In fact, new research from The Irish Longitudinal Study on Aging (TILDA) at Trinity associates vitamin D deficiency with a substantially increased risk of depression—more than 75 percent—over a four-year follow-up period. Published in The Journal of Post-Acute and Long-Term Medicine, the results are important, the authors note, “given the high prevalence of vitamin D deficiency among older people [and] the fact that supplementation has a low risk of toxicity or side effects.” So, how do we know our vitamin D level is normal? The 25-hyroxyvitamin D blood test—often referred to as the 25(OH)D test—is the most accurate way to assess the amount of vitamin D in your body. It’s usually measured in nanograms per milliliter, or ng/mL. But again, what’s the right vitamin D level, according to research? This is where things get problematic. Vitamin D Deficiency Symptoms Vitamin D deficiency symptoms have been linked to numerous health problems, including [1] Here are 10 signs you’re not getting enough vitamin D: • Depression or anxiety • • Fatigue and generalized weakness • Muscle cramps and weakness • Joint pain (most noticeable in the back and knees) • • Low immunity • Low calcium levels in the blood • • Weight gain Other symptoms of vitamin D deficiency include What Causes Vitamin D Deficiency Symptoms? These are the most common causes of vitamin D deficiency sym...

Vitamin D is both a nutrient we eat and a hormone our bodies make. It is a fat-soluble vitamin that has long been known to help the body absorb and retain Few foods naturally contain vitamin D, though some foods are fortified with the vitamin. For most people, the best way to get enough vitamin D is taking a supplement because it is hard to eat enough through food. Vitamin D supplements are available in two forms: vitamin D2 (“ergocalciferol” or pre-vitamin D) and vitamin D3 (“cholecalciferol”). Both are also naturally occurring forms that are produced in the presence of the sun’s ultraviolet-B (UVB) rays, hence its nickname, “the sunshine vitamin,” but D2 is produced in plants and fungi and D3 in animals, including humans. Vitamin D production in the skin is the primary natural source of vitamin D, but many people have insufficient levels because they live in places where sunlight is limited in winter, or because they have limited sun exposure due to being inside much of the time. Also, people with darker skin tend to have lower blood levels of vitamin D because the pigment (melanin) acts like a shade, reducing production of vitamin D (and also reducing damaging effects of sunlight on skin, including skin cancer). Recommended Amounts The Recommended Dietary Allowance for vitamin D provides the daily amount needed to maintain healthy bones and normal RDA: The Recommended Dietary Allowance for adults 19 years and older is 600 IU (15 mcg) daily for men and women, and for adu...

For adults, a typical level of vitamin D in the blood is 20 nanograms per milliliter (ng/ml) or above. Levels of 12 ng/ml are too low and levels of 50 ng/ml are too high. High or low levels may affect a person’s health. However, needs vary between individuals. The body depends on In this article, we look at: • normal vitamin D levels by age • why vitamin D is important • signs of a deficiency • how to increase vitamin D • if too much is possible Age Amount 0–12 months 10 micrograms (mcg) or 400 international units (IU) 1–70 years 15 mcg or 600 IU 71+ years 20 mcg or 800 IU People who are pregnant or breastfeeding also need 15 mcg or 600 IU of vitamin D per day. Doctors use blood tests to determine if someone has adequate levels of vitamin D. They measure vitamin D using one of two measurements: nanomoles per liter (nmol/l) or nanograms per milliliter (ng/ml). The following table provides According to the Without adequate vitamin D, a person may develop soft, weak, or brittle bones. This Vitamin D also contributes to the health of muscles, nerves, the brain, and the immune system. Evidence suggests vitamin D may help to prevent some However, scientists are still trying to understand how vitamin D may influence specific conditions. Research into its ability to influence diseases, such as People can get vitamin D from exposure to sunlight or, to a lesser extent, from food. If someone does not get enough vitamin D from these sources, they may develop a deficiency. The symptoms...

Vitamin D is a nutrient your body needs for building and maintaining healthy bones. That's because your body can only absorb calcium, the primary component of bone, when vitamin D is present. Vitamin D also regulates many other cellular functions in your body. Its anti-inflammatory, antioxidant and neuroprotective properties support immune health, muscle function and brain cell activity. Vitamin D isn't naturally found in many foods, but you can get it from fortified milk, fortified cereal, and fatty fish such as salmon, mackerel and sardines. Your body also makes vitamin D when direct sunlight converts a chemical in your skin into an active form of the vitamin (calciferol). The amount of vitamin D your skin makes depends on many factors, including the time of day, season, latitude and your skin pigmentation. Depending on where you live and your lifestyle, vitamin D production might decrease or be completely absent during the winter months. Sunscreen, while important to prevent skin cancer, also can decrease vitamin D production. Many older adults don't get regular exposure to sunlight and have trouble absorbing vitamin D. If your doctor suspects you're not getting enough vitamin D, a simple blood test can check the levels of this vitamin in your blood. Taking 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...

As a second-order test in the assessment of vitamin D status, especially in patients with renal disease Investigation of some patients with clinical evidence of vitamin D deficiency (eg, vitamin D-dependent rickets due to hereditary deficiency of renal 1-alpha hydroxylase or end-organ resistance to 1,25-dihydroxyvitamin D) Differential diagnosis of hypercalcemia The 25-hydroxyvitamin D test (25HDN / 25-Hydroxyvitamin D2 and D3, Serum) in serum the preferred initial test for assessing vitamin D status and most accurately reflects the body's vitamin D stores. In the presence of renal disease or hypercalcemia, testing of 1,25-dihydroxy vitamin D (DHVD) might be needed to adequately assess vitamin D status. Vitamin D is a generic designation for a group of fat-soluble, structurally similar sterols, which act as hormones. In the presence of renal disease or hypercalcemia, testing of 1,25-dihydroxy vitamin D (DHVD) might be needed to adequately assess vitamin D status. The 25-hydroxyvitamin D (25HDN) test (25HDN / 25-Hydroxyvitamin D2 and D3, Serum) in serum is otherwise the preferred initial test for assessing vitamin D status and most accurately reflects the body's vitamin D stores. Vitamin D compounds in the body are exogenously derived by dietary means; from plants as 25-hydroxyvitamin D2 (ergocalciferol or calciferol) or from animal products as 25-hydroxyvitamin D3 (cholecalciferol or calcidiol). Vitamin D may also be endogenously derived by conversion of 7-dihydrocholester...

What are Vitamin D and Calcium? Vitamin D (a hormone) and calcium (a mineral) are nutrients that sustain healthy bones. They are also needed for: • Muscle movement • Nerve communication • Absorption of calcium and phosphorous (vitamin D) • Immune system responses (vitamin D) • Signaling between cells (calcium) • Hormonal secretion (calcium) • Blood vessel flow (calcium) Without enough vitamin D or calcium, your parathyroid glands compensate by producing too much of their hormone, a condition called hyperparathyroidism. That can lead to bone weakening ( osteoporosis) and increased fracture risk. Other problems from calcium and vitamin D deficiencies include: • Skeletal deformities ( rickets) in children ages 6-24 months • Muscle weakness in children and the elderly (vitamin D only) Given the crucial role of both nutrients in bone health, The Endocrine Society and the Institute of Medicine recommend certain consumption levels based on age and health. They have not yet found, however, that taking vitamin D provides cardiovascular protection. How Much Vitamin D and Calcium Do You Need? The Endocrine Society and The Institute of Medicine have suggested recommended daily allowances (RDA) for vitamin D and calcium, as well as maximum daily consumption amounts that you should not exceed for your safety: Population Calcium RDA (mg) Calcium Max (mg) Vitamin D RDA (IU) Vitamin D Max (IU) 0-6 months 200 1,000 400 1,000 6-12 months 260 1,500 400 1,500 1-3 years 700 2,500 600 2,500 4-8 ...

Overview What is vitamin D deficiency? Vitamin D deficiency means you don’t have enough vitamin D in your body. It primarily causes issues with your bones and Vitamin D is an essential vitamin that your body uses for normal bone development and maintenance. Vitamin D also plays a role in your You can get vitamin D in a variety of ways, including: • Sun exposure on your skin (however, people with darker skin and older people may not get enough vitamin D through sunlight. Your geographical location may also prevent adequate vitamin D exposure through sunlight). • Through the food you eat. • Through nutritional supplements. Despite all these methods to get vitamin D, vitamin D deficiency is a common worldwide problem. Why is vitamin D so important? Vitamin D is one of many vitamins your body needs to stay healthy. It plays a crucial role in maintaining the balance of More specifically, you need vitamin D so your body can use calcium and phosphorus to build bones and support healthy tissues. With chronic and/or severe vitamin D deficiency, a decline in calcium and phosphorus absorption by your intestines leads to Both hypocalcemia and hyperparathyroidism, if severe, can cause symptoms, including muscle weakness and cramps, fatigue and depression. To try to balance calcium levels in your blood (via secondary hyperparathyroidism), your body takes calcium from your bones, which leads to accelerated bone demineralization (when a bone breaks down faster than it can reform). This ca...

Useful For As a second-order test in the assessment of vitamin D status, especially in patients with renal disease Investigation of some patients with clinical evidence of vitamin D deficiency (eg, vitamin D-dependent rickets due to hereditary deficiency of renal 1-alpha hydroxylase or end-organ resistance to 1,25-dihydroxyvitamin D) Differential diagnosis of hypercalcemia Clinical Information Vitamin D is a generic designation for a group of fat-soluble, structurally similar sterols, which act as hormones. In the presence of renal disease or hypercalcemia, testing of 1,25-dihydroxy vitamin D (DHVD) might be needed to adequately assess vitamin D status. The 25-hydroxyvitamin D (25HDN) test (25HDN / 25-Hydroxyvitamin D2 and D3, Serum) in serum is otherwise the preferred initial test for assessing vitamin D status and most accurately reflects the body's vitamin D stores. Vitamin D compounds in the body are exogenously derived by dietary means; from plants as 25-hydroxyvitamin D2 (ergocalciferol or calciferol) or from animal products as 25-hydroxyvitamin D3 (cholecalciferol or calcidiol). Vitamin D may also be endogenously derived by conversion of 7-dihydrocholesterol to 25-hydroxyvitamin D3 in the skin upon ultraviolet exposure. 25HDN is subsequently formed by hydroxylation (CYP2R1) in the liver. 25HDN is a prohormone that represents the main reservoir and transport form of vitamin D, being stored in adipose tissue and tightly bound by a transport protein while in circulatio...