Vitamin d

Medically reviewed by Jillian Kubala, MS, RD, Nutrition — By Megan Ware, RDN, L.D. — Updated on April 26, 2022

The human body produces vi-ta-min D as a response khổng lồ sun exposure. A person can also boost their vi-ta-min D intake through certain foods or supplements.

Bạn đang xem: Vitamin d

Vitamin D is essential for maintaining healthy bones & teeth. It also plays many other important roles in the body, including regulating inflammation & immune function.

Despite its name, vi-ta-min D is not a vi-ta-min but a hooc môn or prohormone.

In this article, we look at the benefits of vi-ta-min D, what happens khổng lồ the body toàn thân when people bởi vì not get enough, and how khổng lồ boost vi-ta-min D intake.

Share on PinterestMateo Arias/EyeEm/Getty Images
Vitamin D plays a critical role in many bodily functions.

Healthy bones

Vitamin D promotes intestinal calcium absorption and helps maintain adequate blood levels of calcium và phosphorus, which is necessary for healthy bone mineralization.

Vitamin D deficiency in children can cause rickets, leading to lớn a bowlegged appearance due to the softening of the bones. Similarly, in adults, vi-ta-min D deficiency manifests as osteomalacia or a softening of the bones. Osteomalacia results in poor bone density & muscular weakness.

Long-term vi-ta-min D deficiency can also present as osteoporosis.

Immune function

An adequate intake of vitamin D may support good immune function và reduce the risk of autoimmune diseases.

Researchers suggest that vi-ta-min D plays an important role in immune function. They believe there may be a liên kết between long-term vitamin D deficiency and the development of autoimmune conditions, such as diabetes, asthma, and rheumatoid arthritis, but more research is necessary khổng lồ confirm the link.

While test-tube studies have shown vi-ta-min D khổng lồ have a positive effect on the immune response of human cells, researchers are yet to replicate these findings in controlled human trials.

Although the toàn thân can create vi-ta-min D, some people are more likely to be at risk of a deficiency than others. Factors that can influence this include:

Those with conditions that limit fat absorption: vitamin D is fat-soluble, meaning intake is dependent on the gut absorbing dietary fats. Conditions that limit fat absorption can decrease vitamin D intake from the diet.People following a gastric bypass: This surgery bypasses a part of the upper intestine that absorbs large amounts of vi-ta-min D. This bypass can cause a deficiency.

Xem thêm: Vị Tướng Già Và Trận Chiến Xuân Lộc: Trận Lớn Cuối Cùng Của Vnch Trước 30/04

Read more on vi-ta-min D deficiency.

The majority of people with a vitamin D deficiency do not present with symptoms. However, a chronic deficiency may cause hypocalcemia, a calcium deficiency disease, và hyperparathyroidism, where the parathyroid glands create a hooc môn imbalance that raises the blood calcium levels.

These conditions can lead lớn secondary symptoms including:

bone fragility, especially in older adultsosteoporosisbone painmuscle twitchingmuscle weaknessmyalgias, or muscle painarthralgias, or joint stiffness

If vitamin D deficiency continues for long periods, it may result in complications, such as:

cardiovascular conditionsautoimmune problemsneurological diseasesinfectionspregnancy complications

Infancy and childhood is a period of rapid growth bone growth. Due to this, it is essential for infants to get adequate amounts of vi-ta-min D.

Chronic vitamin D deficiency can cause rickets, which is a softening of bone tissues that can lead lớn the malformation of bones và joints.

Vitamin D deficiency also has link to high blood pressure and hypertension in children. A 2018 study found a possible connection between low vitamin D levels and arterial wall stiffness in children.

The American Academy of Allergy Asthma và Immunology (AAAAI) suggests a connection between low vi-ta-min D exposure & an increased risk of allergic sensitization.

For example, children who live closer lớn the equator have lower rates of admission lớn the hospital for allergies và fewer prescriptions for epinephrine auto-injectors, or EpiPens. They are also less likely khổng lồ have a peanut allergy.

A 2019 review suggests that pregnant people deficient in vi-ta-min D may have a greater risk of developing preeclampsia và giving birth preterm.

Researchers of a 2020 đánh giá study found that there may be an association between higher vi-ta-min D concentrations during pregnancy & a decreased risk of preeclampsia and premature birth. However, researchers need well-designed clinical trials with vitamin D supplementation in order to lớn better define associations.

Some research associates a poor vi-ta-min D status with gestational diabetes. Treating vitamin D deficiency may also reduce the risk of asymptomatic bacterial vaginosis in pregnant people. However, conflicting research found no link between vi-ta-min D supplementation and the prevention of bacterial vaginosis.

There may be an association between adequate vi-ta-min D intake during pregnancy và a reduced risk of asthma & food allergy development in the resulting newborns. However, the evidence is not definitive, & more studies are necessary.

Chuyên mục: Làng Game Việt