Vitamins play a vital role in a human body and thus it becomes important for every human to make sure that they are well keeping their levels of the key nutrients.

Highlighting the same, the nation's largest ever study of how well we keep up our levels of the key nutrient recently revealed the increasing cases of Vitamin D deficiency and how it is affecting more Australians and even lasting longer than previously believed.

The study was done by the University of Sydney in which the researchers studied vitamin D levels of 24,000 blood samples that were collected from a wide cross-section of New South Wales residents. The study was followed for more than two years and concluded that the levels of the key nutrient i. e. Vitamin D have been found to be the lowest around this time of year.

On the other hand, the levels of the nutrient were highest in summer, when they reached a maximum in January for women and February for men, but they declined gradually in late summer and fell sharply in the winter months. During early spring, the levels again dipped to their lowest point.

The current testing guidelines did not take any seasonal variation into account but they do have concluded that now is the time for low Vitamin D.