Vitamin D is a nutrient found in some foods that is needed for health and to maintain strong bones. People who get too little vitamin D may develop soft, thin, and brittle bones, a condition known as rickets in children and osteomalacia in adults. Vitamin D is important to the body in many other ways as well.
Muscles need it to move, for example, nerves need it to carry messages between the brain and every body part, and the immune system needs vitamin D to fight off invading bacteria and viruses. Together with calciumvitamin D also helps protect older adults from osteoporosis. Vitamin D is found in cells throughout the body. The amount of vitamin D you need each day depends on your age.
Average daily recommended amounts from the Food and Nutrition Board a national group of experts for different ages are listed below in International Units IU:. Very few foods naturally have vitamin D. Fortified foods provide most of the vitamin D in American diets.
The body makes vitamin D when skin is directly exposed to the sun, and most people meet at least vitamin d and fatty liver of their vitamin D needs this way. Skin exposed to sunshine indoors through a window will not produce vitamin D. Cloudy days, shade, and having dark-colored skin also cut down on the amount of vitamin D the skin makes. However, despite the importance of the sun to vitamin D synthesisit is prudent to limit exposure of skin to sunlight in order to lower the risk for skin cancer.
When out in the sun for more than a few minutes, wear protective clothing and apply sunscreen with an SPF sun protection factor of 8 or more, vitamin d and fatty liver. Tanning beds also cause the skin to make vitamin D, but pose similar risks for skin cancer, vitamin d and fatty liver.
People who avoid the sun or who cover their bodies with sunscreen or clothing should include good sources of vitamin D in their diets or take a supplement. Recommended intakes of vitamin D are set on the assumption of little sun exposure. Vitamin D is found in supplements and fortified foods in two different forms: D 2 ergocalciferol and D 3 cholecalciferol.
Both increase vitamin D in the blood. By these measures, some Americans are vitamin D deficient and almost no one has levels that are too high. In general, young people have higher blood levels of hydroxyvitamin D than older people and males have higher levels than females. By race, non-Hispanic blacks tend to have the lowest levels and non-Hispanic whites the highest.
In children, vitamin D deficiency causes rickets, a condition in which the bones vitamin d and fatty liver soft and bend. In adults, vitamin D deficiency leads to osteomalacia, causing bone pain and muscle weakness. Vitamin D is being studied for its possible connections to several diseases and medical problems, including diabeteshypertensionand autoimmune conditions such as multiple sclerosis, vitamin d and fatty liver.
Two of them discussed below are bone disorders and some types of cancer. As they get older, millions of people mostly women, vitamin d and fatty liver, but men too develop, or are at risk of, osteoporosis, condition in which bones become fragile and may fracture if one falls. It is one consequence of not getting enough calcium and vitamin D over the long term. Men and women should talk with their healthcare providers about their needs for vitamin D and calcium as part of an overall plan to prevent or treat osteoporosis.
Some studies suggest that vitamin D may protect against colon cancer and perhaps even cancers of the prostate and breast. But higher levels of vitamin D in the blood have also been linked to higher rates of pancreatic cancer. Yes, when amounts in the blood become too high.
Signs of toxicity include nauseavomiting, poor appetite, constipationweakness, and weight loss. And by raising blood levels of calcium, too much vitamin D can cause confusion, disorientationand problems with heart rhythm.
Excess vitamin D can also damage the kidneys. Vitamin D toxicity almost always occurs from overuse of supplements. Like most dietary supplements, vitamin D may interact or interfere with other medicines or supplements you might be taking. Here are several examples:. Tell your doctor, pharmacistand other healthcare providers about any dietary supplements and medicines you take. They can tell you if those dietary supplements might interact or interfere with your prescription or over-the-counter medicines, or if the medicines might interfere with how your body absorbs, uses, or breaks down nutrients.
Foods contain vitamins, mineralsyoga and arthritis fiber and other substances that benefit health. In some cases, fortified foods and dietary supplements may provide nutrients that otherwise may be consumed in less-than-recommended amounts.
For more information about building a healthy diet, refer to the Dietary Guidelines for Americans and the U. This fact sheet by the Office of Dietary Supplements ODS provides information that should not take the place of medical advice. We encourage you to talk to your healthcare providers doctor, vitamin d and fatty liver, registered dietitian, pharmacist, etc. Any mention in this publication of a specific product or stopping and starting wellbutrin, or recommendation from an organization or professional society, does not represent an endorsement by ODS of that product, service, vitamin d and fatty liver, or expert advice.
Strengthening Knowledge and Understanding of Dietary Supplements. Vitamin D Fact Sheet for Consumers. Table of Contents What is vitamin d and fatty liver D and what does it do? How much vitamin D do I need? What foods provide vitamin D?
Can I get vitamin D from the sun? What vitamin d and fatty liver of vitamin D dietary supplements are available? Am I getting enough vitamin Vitamin d and fatty liver What are some effects of vitamin D on health?
Can vitamin D be harmful? Are there skin cancer and vocational rehabilitation interactions with vitamin D that I should know about? Vitamin D and healthful eating Where can I find out more about vitamin D?
Disclaimer This fact sheet by the Office of Dietary Supplements ODS provides information that should not take the place of medical advice.