https://www.mayoclinic.org/drugs-supplements-vitamin-d/art-20363792
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.

https://www.healthline.com/health/food-nutrition/benefits-vitamin-d
Getting enough vitamin D helps the growth and development of bones and teeth. It may also provide improved resistance to certain diseases. Vitamin D is a fat-soluble vitamin in a family of

https://en.wikipedia.org/wiki/Vitamin_D
Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and for many other biological effects. In humans, the most important compounds in this group are vitamin D 3 (cholecalciferol) and vitamin D 2 (ergocalciferol).

https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/
Vitamin D helps regulate the renin-angiotensin-aldosterone system (and thereby blood pressure), vascular cell growth, and inflammatory and fibrotic pathways . Vitamin D deficiency is associated with vascular dysfunction, arterial stiffening, left ventricular hypertrophy, and hyperlipidemia . For these reasons, vitamin D has been linked to heart

https://www.medicalnewstoday.com/articles/161618
Summary. Vitamin D is essential for the bones and teeth, the immune system, brain health, and for regulating inflammation. The body produces vitamin D as a response to sun exposure. Certain foods

https://ods.od.nih.gov/factsheets/VitaminD-Consumer%20/
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.

https://www.webmd.com/vitamins/ai/ingredientmono-929/vitamin-d
Vitamin D is an essential vitamin that helps regulate calcium and phosphorus in the body. It also plays a role in maintaining proper bone structure. There are different forms of vitamin D

https://www.healthline.com/nutrition/vitamin-d-101
Learn what vitamin D is, how it works, where to get it, and why it's important for your health. Find out the symptoms, causes, and consequences of vitamin D deficiency, as well as the benefits, dosage, and interaction of this vital nutrient.

https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-d/
Vitamin D helps regulate the amount of calcium and phosphate in the body. These nutrients are needed to keep bones, teeth and muscles healthy. A lack of vitamin D can lead to bone deformities such as rickets in children, and bone pain caused by a condition called osteomalacia in adults.. Government advice is that everyone should consider taking a daily vitamin D supplement during the autumn

https://www.verywellhealth.com/vitamin-d-benefits-6889032
Vitamin D, also known as calciferol, is a fat-soluble vitamin essential for physical and mental health.The two primary forms of vitamin D are vitamin D2 (ergocalciferol), found in plants, and vitamin D3 (cholecalciferol), found in animal tissues.

https://www.uptodate.com/contents/vitamin-d-deficiency-in-adults-definition-clinical-manifestations-and-treatment
Vitamin D stores decline with age, especially in the winter . In temperate areas such as Boston and Edmonton, for example, cutaneous production of vitamin D virtually ceases in winter . Thus, identification and treatment of vitamin D deficiency is important for musculoskeletal health and possibly even extraskeletal health, including the immune

https://www.health.harvard.edu/staying-healthy/vitamin-d-and-your-health-breaking-old-rules-raising-new-hopes
Vitamin D's best-known role is to keep bones healthy by increasing the intestinal absorption of calcium. Without enough vitamin D, the body can only absorb 10% to 15% of dietary calcium, but 30% to 40% absorption is the rule when vitamin reserves are normal. A lack of vitamin D in children causes rickets; in adults, it causes osteomalacia.

https://www.verywellhealth.com/foods-rich-in-vitamin-d-8348470
Summary. People can get vitamin D from sunlight, food, and supplements. Food sources of vitamin D include fatty fish and fish liver oils, beef liver, egg yolks, cheese, and mushrooms. Certain foods, like cow's milk, non-dairy milk, breakfast cereals, and orange juice, are also frequently fortified with vitamin D.

https://nutritionsource.hsph.harvard.edu/vitamin-d/
Learn about vitamin D, a nutrient and hormone that helps build bone, reduce inflammation, and prevent disease. Find out how to get enough vitamin D from food, sun, and supplements, and what are the optimal levels and risks.

https://www.healthline.com/nutrition/vitamin-d-deficiency-symptoms
Symptoms of vitamin D deficiency may include fatigue, frequent illness, anxiety, bone pain, and slower wound healing, among others. Treatments may include dietary changes or taking supplements.

https://my.clevelandclinic.org/health/diseases/15050-vitamin-d-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 muscles. Vitamin D is an essential vitamin that your body uses for normal bone development and maintenance. Vitamin D also plays a role in your nervous system, musculoskeletal system and immune system.

https://www.webmd.com/diet/vitamin-d-deficiency
Vitamin D is essential for healthy bones, & a lack of it can lead to health problems, including cardiovascular disease. Know how to get plenty of vitamin D & treat deficiency.

https://medlineplus.gov/vitamind.html
The amount of vitamin D you need each day depends on your age. The recommended amounts, in international units (IU), are: Birth to 12 months: 400 IU. Children 1-13 years: 600 IU. Teens 14-18 years: 600 IU. Adults 19-70 years: 600 IU. Adults 71 years and older: 800 IU. People who are pregnant or breastfeeding: 600 IU.

https://www.healthline.com/nutrition/9-foods-high-in-vitamin-d
Wild salmon typically contains more vitamin D than farmed salmon, but both are good sources of vitamin D. In a 3.5-ounce (100-gram) serving, farmed salmon contains around 66% of the DV and wild

https://www.yalemedicine.org/conditions/vitamin-d-deficiency
Learn about vitamin D deficiency, a condition that affects bone and muscle health and may have no symptoms. Find out how to prevent and treat it with sun exposure, foods, supplements, or medication.

https://www.cnbc.com/2020/09/26/how-to-know-if-you-have-a-vitamin-d-deficiency.html
Studies have also found that prolonged vitamin D deficiency can cause bone-related diseases in adults and children. All that said, the only way to truly know if you are vitamin D deficient is to

https://ods.od.nih.gov/factsheets/VitaminD-Consumer/
Very high levels of vitamin D in your blood (greater than 375 nmol/L or 150 ng/mL) can cause nausea, vomiting, muscle weakness, confusion, pain, loss of appetite, dehydration, excessive urination and thirst, and kidney stones. Extremely high levels of vitamin D can cause kidney failure, irregular heartbeat, and even death.

https://www.healthline.com/nutrition/how-much-vitamin-d-to-take
Vitamin D is a fat-soluble vitamin that plays a role in many essential body functions. There are two forms of vitamin D in the diet and supplements:. Vitamin D2 (ergocalciferol): found in some