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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.
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 .
Anyone can have vitamin D deficiency, including infants, children and adults. Vitamin D deficiency may be more common in people with higher skin melanin content (darker skin) and who wear clothing with extensive skin coverage, particularly in Middle Eastern countries.
Here are some of the highlights: In the general population, adults ages 19 and older don't require routine testing of vitamin D levels. However, they should follow the U.S. National Academy of Medicine's Recommended Dietary Allowance for vitamin D intake — 600 international units (IU) daily until age 70, and 800 IU for people older than age 70.
Vitamin D sufficiency prevents rickets in children and osteomalacia in adults. Together with calcium, vitamin D also helps protect older adults from osteoporosis.
Your need for vitamin D supplementation will depend on several factors, such as your age. We look at how much vitamin D you need and how to get the right amount.
Mayo Clinic recommends that adults get at least the RDA of 600 IU. However, 1,000 to 2,000 IU per day of vitamin D from a supplement is generally safe, should help people achieve an adequate blood level of vitamin D, and may have additional health benefits.
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.
Vitamin D, formally known as calciferol, is a fat-soluble nutrient that has two main responsibilities: helping calcium reach your bones (which keeps them strong) and supporting your immune system so it can fight off infections. But an estimated 35% of adults have a vitamin D deficiency, and around the world, that number is much higher. Why?
The upper limit for vitamin D for all adults 18 and older is 4,000 IU (100 micrograms). Toxicity: Too much vitamin D is toxic because it affects calcium in the body. Excessive vitamin D intake leads to very high calcium levels, which causes vomiting, muscle weakness, dehydration, and kidney stones, among other symptoms. In severe cases, vitamin ...