How to identify and beat Vitamin D Deficiency?

Vitamin D deficiency can easily be identified or detected by a simple Vitamin D blood test.

Vitamin D Test measures the levels of Vitamin D in the blood. Two forms of vitamin D can be measured in the blood, 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D. The 25-hydroxyvitamin D (Vitamin D 25-OH) is the major form found in the blood and is the relatively inactive precursor to the active hormone, 1,25-dihydroxyvitamin D. Because of its long half-life and higher concentration, 25-hydroxyvitamin D is commonly measured to assess and monitor vitamin D status in individuals. Vitamin D Total blood test is also available which measures the total combined levels of both forms of Vitamin D.

The normal range of Vitamin D 25-OH is measured as nanograms per milliliter (ng/mL) or nmol/L and can vary from lab to lab.

LevelReference range (ng/mL)
Severe deficiency<10 ng/mL
Mild to moderate deficiency10-24
Potential intoxication>80


·      There can be seasonal variation in 25 (OH) vitamin D level, with values being 40-50% lower in winter than in summer. It is also influenced by sunlight, latitude, skin pigmentation, sunscreen use, and hepatic function.

·       25 (OH) vitamin D levels can vary with age

·       25 (OH) vitamin D level is increased during pregnancy.

Low vitamin D level than normal reference range indicates vitamin D deficiency which can be because of less sun exposure, dietary deficiency or due to decreased absorption from the intestine.  Sometimes, medicines used to treat seizure (Phenytoin) can cause Vitamin D deficiency by interfering with transformation to 25-hydroxyvitamin D in the liver. Severe liver and kidney diseases can also cause vitamin D deficiency.

High vitamin D level than normal reference range indicates vitamin D intoxication and is usually due to excess supplementation of the vitamin.

You can easily beat Vitamin D deficiency by getting more Vitamin D through diet and supplements. Increased exposure to sunlight also helps as Vitamin D is produced in our body on exposure of  skin to sunlight.

Vitamin D requirements depend on a number of factors like age, race, geographical location, season, sun exposure etc. A daily Vitamin D intake of 1000–4000 IU, or 25–100 micrograms, should be enough to ensure optimal blood levels in most people.

Spotify playlist guardian Previous post HOW TO GET MORE SPOTIFY STREAMS AS AN UNSIGNED ARTIST
Next post A Guide to Residential Heating & Cooling System