![]() The ideal exposure time is between 11:00 am and 2:00 pm. It is recommended to expose 18% of the body, that is arms without long sleeves and face without sunscreen. Light-skinned individuals require 20 minutes of exposure to direct sunlight three to four times a week in order to enable the skin to make adequate vitamin D whereas those with darker skin (more melanin pigment) require 30-to-40 minute exposure three to four times a week. How much sunlight is needed to make adequate Vitamin D? An Indian study confirmed that inhabitants of polluted areas are at a higher risk of deficiency. In addition, air pollution contributes by reducing the amount of solar UV-B rays that reach the earth’s surface, apart from deterring people from being outdoors. Besides, our darker skin contains more melanin pigment, which reduces the skin's ability to make vitamin D. ![]() ![]() In India, inadequate exposure to sunlight results from indoor lifestyle in urban areas and wearing head coverings. ![]() Hence, inadequate sunlight exposure or insufficient absorption of UV-B rays by the skin lead to deficiency. The skin produces 90% of the body's vitamin D needs, under ultraviolet-B radiation from sunlight. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |