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Vitamin D deficiency is seen to rise among many in winters due to the lack of skin exposure towards sunshine. Sunlight allows Vitamin D to be synthesized within our bodies. In winters, the sunlight exposure to our skin reduces due to multiple factors. While many hibernate indoors to stay protected from the chilling weather, many others will wear fully covered clothes leaving very little skin exposure to sunlight.
Also, due to fog and other climatic condition, there is barely enough sunshine during the daytime and sun rays are not as strong as it is during summers. This seasonal weather affects the Vitamin D levels in our body. Due to inadequate exposure to sunlight, the body does not get enough ultraviolet B (UVB) rays, which is responsible for triggering the skin to produce Vitamin D.
In order to maintain adequate levels of Vitamin D during winters, you should try to get outdoor for a 15-minute walk in the sun on a daily basis, take Vitamin D supplements consulting your doctor, intake food sources rich in Vitamin D including salmon, mackerel, tuna, mushrooms, cheese, eggs, and Vitamin D fortified foods, have your Vitamin D levels checked regularly.