Normal Value Of Vitamin D In Human Body
Introduction
Vitamin D is a vital nutrient that helps our body to absorb calcium and maintain healthy bones. It is also essential for our immune system and overall health. The primary source of vitamin D is sunlight, but it can also be obtained from certain foods and supplements. In this article, we will discuss the normal value of vitamin D in the human body.
How Much Vitamin D Do We Need?
The recommended daily intake of vitamin D varies depending on age, sex, and other factors. According to the National Institutes of Health, the following are the daily recommended intakes:
- Infants (0-12 months): 400-1000 IU
- Children (1-18 years): 600-1000 IU
- Adults (19-70 years): 600-800 IU
- Seniors (70+ years): 800-1000 IU
How Is Vitamin D Measured?
Vitamin D is measured in the blood as 25-hydroxyvitamin D (25(OH)D). The normal range for 25(OH)D is 30-100 ng/mL (nanograms per milliliter). Levels below 30 ng/mL are considered deficient, while levels above 100 ng/mL are considered toxic.
What Are The Symptoms Of Vitamin D Deficiency?
Vitamin D deficiency can cause a variety of symptoms, including:
- Fatigue
- Muscle weakness
- Joint pain
- Depression
- Impaired wound healing
- Low immunity
- Increased risk of osteoporosis and fractures
How Can We Get Enough Vitamin D?
The primary source of vitamin D is sunlight. When our skin is exposed to sunlight, it produces vitamin D. However, the amount of vitamin D produced depends on various factors, such as:
- The time of day
- The season
- The latitude
- The amount of skin exposed
- The use of sunscreen
In addition to sunlight, vitamin D can be obtained from certain foods, such as fatty fish (salmon, tuna, and mackerel), egg yolks, and fortified foods (milk, orange juice, and cereals). Supplements are also available, but it is always best to consult with a healthcare provider before taking any supplements.
Conclusion
Vitamin D is an essential nutrient that plays a crucial role in our overall health. The normal value of vitamin D in the human body is between 30-100 ng/mL. Vitamin D deficiency can cause various symptoms, including fatigue, muscle weakness, and depression. To ensure that we get enough vitamin D, we should spend some time in the sun, eat foods rich in vitamin D, and consider taking supplements if necessary.