In the earlier days when vitamins and cod liver oil were not there children suffering from rickets were made to sit in the sun for the cure through sunshine for their deformities due to the weak and soft bones.

Tuberculosis was also treated in the same manner.

Vitamin D deficiency is the cause of many disorders apart from marinating bone health, including breast cancer, diabetes mellitus, cardio vascular diseases, colon and prostrate diseases also.

Researcher Brent Richards of the Lady Davis Institute for Medical Research located at Montreal’s Jewish General Hospitals explained the reason of food and sunshine being not enough to ward off the vitamin deficit.

Richards had been found saying that science has been aware of the fact that food and environment play a crucial role in forming vitamin D for quite sometime bit the Genetic role was not very clear. He said that body’s 50% of vitamin D level are determined by genetic factors was known to science.

But in his new studies considered as the largest in its kind it had been seen that variant in three genes are responsible for low vitamin D level. These genes are involved with the transport or breakdown of vitamin D as well as its synthesis.

Richards along with his co-author Dr. Thomas J. Wang, and other scientists from various part of the world assessed 34,000 people of European descent and found the variations more than doubled the risk for vitamin D deficiency.

Report by the SUNLIGHT consortium published in the Lancet noted that the condition may affect up to half of all healthy adult of the developed world.

The study may be able to explain the reason of low vitamin D levels in people who should have enough vitamin D as they gets enough exposure to the sun and have enough food rich in vitamin D.