Why is vitamin D so important?
Daniel Lopez
Updated on March 06, 2026
It is a fat-soluble vitamin that has long been known to help the body absorb and retain calcium and phosphorus; both are critical for building bone. Also, laboratory studies show that vitamin D can reduce cancer cell growth, help control infections and reduce inflammation.
What happens when your vitamin D is low?
Vitamin D deficiency occurs when the body doesn't get enough vitamin D from sunlight or diet. Vitamin D deficiency can cause loss of bone density, osteoporosis, and broken bones. Vitamin D is sometimes called the sunshine vitamin because your body makes it from cholesterol when your skin is exposed to sunlight ( 1 ).Why is vitamin D the most important?
Perhaps the most vital are regulating the absorption of calcium and phosphorus and facilitating normal immune system function ( 1 ). Getting enough vitamin D is important for typical growth and development of bones and teeth, as well as improved resistance to certain diseases.What are 10 benefits of vitamin D?
Vitamin D Benefits
- It strengthens the immune system. ...
- It might prevent certain types of cancer. ...
- It boosts your mood. ...
- It can aid in weight loss. ...
- It can lower the risk of rheumatoid arthritis. ...
- It lowers the risk of type 2 diabetes. ...
- It can help lower blood pressure. ...
- It might reduce the risk of heart disease.
Why is vitamin D important for out health?
The vitamin plays an important role in maintaining bones, teeth, and optimal immune function. A vitamin D deficiency can cause calcium deficiency disease, and hyperparathyroidism, a hormone imbalance that raises the blood calcium levels.Can lack of vitamin D cause anxiety?
Research indicates that there is a strong link between vitamin D deficiency and anxiety as well as depression. Individuals struggling with a mental illness may turn to problematic behavior to mask the pain.Does vitamin D cause weight gain?
Despite these findings, the current body of research suggests that consuming higher amounts of vitamin D has little effect on weight gain or loss.Is it OK to take vitamin D everyday?
Some people may need a higher dose, however, including those with a bone health disorder and those with a condition that interferes with the absorption of vitamin D or calcium, says Dr. Manson. Unless your doctor recommends it, avoid taking more than 4,000 IU per day, which is considered the safe upper limit.Does vitamin D give you energy?
Low energy or fatigue is a common symptom of vitamin D deficiency. That's because vitamin D seems to help mitochondria—the part of a cell that generates energy—use oxygen and power various parts of the body, including muscles. Large studies on otherwise healthy people taking a daily vitamin D supplement are lacking.What foods are highest in vitamin D?
Foods high in vitamin D include fish, mushrooms exposed to sunlight, fortified milk, fortified milk substitutes, fortified tofu, fortified yogurt, fortified breakfast cereals, fortified orange juice, pork chops, and eggs.How can I get vitamin D naturally?
- Spend time in sunlight. Vitamin D is often referred to as “the sunshine vitamin” because the sun is one of the best sources of this nutrient. ...
- Consume fatty fish and seafood. ...
- Eat more mushrooms. ...
- Include egg yolks in your diet. ...
- Eat fortified foods. ...
- Take a supplement. ...
- Try a UV lamp.
How much vitamin D should I take daily?
Taking a multivitamin with vitamin D may help improve bone health. The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for people ages 1 to 70 years, and 800 IU for people over 70 years.Does vitamin D affect sleep?
Research links vitamin D levels to sleep quality. In fact, several studies associate low levels of vitamin D in your blood to a higher risk of sleep disturbances, poorer sleep quality and reduced sleep duration ( 9 , 10 , 11 ).Does vitamin D affect hair?
One role vitamin D plays is stimulating new and old hair follicles. When there isn't enough vitamin D in your system, new hair growth can be stunted. Vitamin D deficiency has been linked to alopecia, the autoimmune condition that causes bald patches on the scalp and other areas of the body.Is vitamin D deficiency serious?
If left untreated over time, vitamin D deficiency can lead to serious bone disorders. For example, severe and long-term vitamin D deficiency may result in rickets or osteomalacia.Are eggs high in vitamin D?
One serve of eggs contains 8.2mcg of vitamin D which is 82% of the recommended dietary vitamin D intake of 10mcg per day. Eggs are one of the highest food sources of vitamin D.How can I raise my vitamin D levels quickly?
You can raise your vitamin D levels quickly in three main ways: Getting outside and exposing your skin to sunlight. Taking a vitamin D supplement.
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Eat foods rich in vitamin D
- Cod liver oil*
- Trout*
- Salmon*
- Mushrooms*
- Fortified dairy and non-dairy milks.
- Fortified cereals.
- Sardines.
- Eggs.