We all need some time in the sun. Vitamin D is a crucial factor in calcium absorption. Even if your diet is high in calcium, the body is unable to absorb it without adequate vitamin D. We can make all the vitamin D we need from sun exposure, which accounts for more than 80% of vitamin D in our body. But what about aging and skin cancer? Should you stop using sunscreen? Definitely not! Although any sunscreen above SPF 8 will prevent vitamin D synthesis, roasting yourself under the Australian sun without a protection is not recommended.
On a sunny summer day, most people will only need to expose their hands, arms and face for 5-10minutes between 10am and 2pm for adequate time in the sun. In winter, the requirement will extend to three hours per week (or average of 25minutes per day). Prolonged sun exposure damages the vitamin D precursor in the skin thus preventing vitamin D activation. All you need is a little walk in the sun during your lunch break. Don’t forget to pull your sleeves up! If you have dark skin you might need up to six times longer sunlight exposure than light-skinned people to achieve the same amount of vitamin D synthesis #facts #vitamins