What are normal levels of vitamin D? Vitamin D deficiency is a common problem, but most people are not aware of it. The first symptoms usually occur very late; this is why this condition can stay undiagnosed for quite a long time. Vitamin D is synthesized in the skin during the exposure to sunrays. White skin needs nearly twenty minutes to produce vitamin D, whereas darker skin needs more time. Vitamin D deficiency can lead to serious problems, and it is important to prevent it from developing. Considering the fact that it shows no symptoms in the beginning, the only way to see if your vitamin D levels are normal is to take a blood test.
What Are Normal Levels of Vitamin D?
● Levels lower than 30 nmol/L can lead to osteomalacia in adults and rickets in children. These are very low levels – or vitamin D deficiency.
● Levels from 30 to 50 nmol/L are considered low, but not as alarming as levels lower than 0 nmol/L.
● Levels higher than 50 nmol/L are considered good enough for bone health
● Levels higher than 125 nmol/L are too high.
Vitamin D Test
The test is known as “the 25-hydroxy test”, and it is considered the best method of measuring vitamin D levels in blood. 25-hydroxy vitamin D will convert into the active form in your kidneys. This form of vitamin D will control phosphorus and calcium absorption in the body.
How Is the Test Done?
Blood will be taken from your vein. Your arm will be wrapped, the vein will swell a little, and a blood sample will be taken. After this, the spot will be covered and the bleeding will stop in very short time. You should not eat anything for at least four hours before taking this test.
Normal vitamin D levels range from 30 to 74 ng/mL.
Low Levels of Vitamin D
Common symptoms of low vitamin D levels include:
This condition is treated with vitamin D supplements. The dosage will depend on how low your vitamin D levels are.
The Risk Factors
● Babies who don’t consume formula milk are at risk of becoming deficient in vitamin D. Breastfeeding is certainly healthy for both mother and the baby, but breast milk can’t provide sufficient amounts of this vitamin.
● Pregnant women and breast-feeding women can develop vitamin D deficiency.
● If your sun exposure is limited, you will likely have low levels of vitamin D in blood. This is a common problem for people who live in cold weather countries.
● Dark-skinned individuals are at risk because melanin in dark skin blocks the sunrays, so dark skin needs longer exposure.
● People who suffer from certain problems like kidney disease and Crohn’s disease may lack vitamin D, because the body can’t absorb it properly.
● People who take primidone, carbamazepine, and similar medications, may lack vitamin D.