About Careers MedBlog Contact us

Certain Genetic Variations Increase the Risk of Having a Lower Level of Vitamin D

by Dr. Trupti Shirole on December 7, 2015 at 10:36 PM
Font : A-A+

 Certain Genetic Variations Increase the Risk of Having a Lower Level of Vitamin D

Vitamin D is essential to bone health. Some studies have also linked adequate levels of vitamin D with a lower risk of cardiovascular, inflammatory and autoimmune diseases, certain cancers and death. Certain genetic variations increase the risk of having a lower level of vitamin D, revealed a new study by the National Food Institute, Technical University of Denmark.

For the study, researchers examined the effect of eating vitamin D fortified foods or receiving artificial UVB irradiation during the winter months. The fortified diet and artificial sunlight had less of an effect on vitamin D status in people with certain genetic variations. The results can be used to identify people who are genetically predisposed to having lower levels of vitamin D.


During the summer months the majority of Danes get sufficient amounts of vitamin D from sunlight. Vitamin D is synthesized when the sun's UVB rays hit the skin. During the winter months in Denmark the sun's UVB rays aren't strong enough for this process to take place and as such Danes have to rely on their diet and dietary supplements to meet their need for vitamin D.

Researcher Janna (Ioanna) Nissen from the National Food Institute has studied the relationship between 25 different genetic variations in seven different genes and the level of vitamin D in her research subjects' blood in late summer and at the end of winter respectively. She has also studied the effect of eating vitamin D fortified bread and milk or receiving artificial UVB irradiation had on the research subjects' vitamin D status compared to their genes.

Her studies show that the two genes CYP2R1 and GC influence the level of vitamin D in a person's blood.

Janna Nissen said, "The results show that carriers of all the genetic risk variants have the lowest vitamin D levels in late summer, the largest drop in vitamin D levels after eating fortified bread and milk during winter and the smallest increase after artificial UVB irradiation compared to carriers of fewer or no genetic risk variants. The study results can be used to identify genetically predisposed individuals who have an increased risk of having lower vitamin D levels. This will be possible in the future by means of a genetic test."

At present it is not clear whether or not individuals who are genetically predisposed to lower levels of vitamin D without being vitamin D deficient have an increased risk of developing vitamin D related diseases later in life.

Source: Eurekalert


Recommended Reading

Latest Research News

 Experiments on Child Brain Tumour and Muscle Ageing Heading to Space
The International Space Station will be used to carry out experiments seeking to improve understanding of incurable child brain tumors and the muscle aging process.
 Nearly 1 In 5 UK Adults Experience Negative Responses to Sounds
How many people in the UK have misophonia? In a representative sample study, most people had at least some irritation upon hearing trigger sounds.
Why Are 1 in 8 Indians at Risk of Irreversible Blindness
Routine eye-checkups and mass screenings enable early diagnosis and treatment of glaucoma. Late-stage glaucoma diagnosis leads to blindness.
 Blind People Feel Their Heartbeat Better Than Those With Sight
Brain plasticity following blindness leads to superior ability in sensing signals from the heart, which has implications for bodily awareness and emotional processing.
New Biomarkers Help Detect Alzheimer's Disease Early
A group of scientists were awarded £1.3 million to create a new “point of care testing” kit that detects Alzheimer's disease biomarkers.
View All
This site uses cookies to deliver our services.By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use  Ok, Got it. Close

Certain Genetic Variations Increase the Risk of Having a Lower Level of Vitamin D Personalised Printable Document (PDF)

Please complete this form and we'll send you a personalised information that is requested

You may use this for your own reference or forward it to your friends.

Please use the information prudently. If you are not a medical doctor please remember to consult your healthcare provider as this information is not a substitute for professional advice.

Name *

Email Address *

Country *

Areas of Interests