Signs of toxicity include nausea and vomiting, poor appetite, constipation, weakness, and weight loss. Getting too much vitamin D (known as vitamin D toxicity) can be harmful. Check with your provider about how much you need to take, how often you need to take it, and how long you need to take it. If you have vitamin D deficiency, the treatment is with supplements. There are also vitamin D supplements, both in pills and in a liquid for babies. Foods that often have added vitamin D include: You can check the food labels to find out whether a food has vitamin D. You can also get vitamin D from fortified foods. Fatty fish such as salmon, tuna, and mackerel.There are a few foods that naturally have some vitamin D: Osteomalacia causes weak bones, bone pain, and muscle weakness. In adults, severe vitamin D deficiency leads to osteomalacia.African American infants and children are at higher risk of getting rickets. Rickets is a rare disease that causes the bones to become soft and bend. Severe vitamin D deficiency can also lead to other diseases: Vitamin D deficiency can lead to a loss of bone density, which can contribute to osteoporosis and fractures (broken bones). What problems does vitamin D deficiency cause? There is a blood test that can measure how much vitamin D is in your body. Talk with your provider if you are at risk for vitamin D deficiency. People who take medicines that affect vitamin D levels, including certain cholesterol, anti-seizure, steroid, and weight-loss medicines.People with chronic kidney or liver disease, which can affect your ability to change vitamin D into a form your body can use.Since vitamin D is absorbed there, bypassing part of it makes it harder to absorb enough vitamin D. People who have had gastric bypass surgery, a type of weight loss surgery which creates a bypass of part of the small intestine.People who have obesity, because their body fat binds to some vitamin D and prevents it from getting into the blood.People with conditions that make it difficult to absorb nutrients from food, such as Crohn's disease, ulcerative colitis, and celiac disease.People with dark skin, which has less ability to produce vitamin D from the sun.Older adults, because your skin doesn't make vitamin D when exposed to sunlight as efficiently as when you were young, and your kidneys are less able to convert vitamin D to its active form.If you are breastfeeding, give your infant a supplement of 400 IU of vitamin D every day. Breastfed infants, because human milk is a poor source of vitamin D.Some people are at higher risk of vitamin D deficiency: You take medicines that interfere with your body's ability to convert or absorb vitamin D.Your liver or kidneys cannot convert vitamin D to its active form in the body.You don't get enough exposure to sunlight.You don't absorb enough vitamin D from food (a malabsorption problem).You don't get enough vitamin D in your diet.You can become deficient in vitamin D for different reasons: Check with your health care provider about how much you need. People at high risk of vitamin D deficiency may need more. Pregnant and breastfeeding women: 600 IU.The recommended amounts, in international units (IU), are: The amount of vitamin D you need each day depends on your age. But too much sun exposure can lead to skin aging and skin cancer, so many people try to get their vitamin D from other sources. Your body forms vitamin D naturally after exposure to sunlight. You can get vitamin D in three ways: through your skin, from your diet, and from supplements. Vitamin D also has a role in your nervous, muscle, and immune systems. Calcium is one of the main building blocks of bone. Vitamin D helps your body absorb calcium. Why do I need vitamin D and how do I get it? Vitamin D deficiency means that your body is not getting enough vitamin D to stay healthy.
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