Effects of Sunlight
How Does Sunlight Affect Vitamin D Levels?
Although vitamin D can be acquired through sunlight exposure, it is actually just an element that triggers the body to produce vitamin D. This means that sunlight itself is not the source of the vitamin. Nevertheless, exposing oneself to sunlight for about 15 – 20 minutes a day can help a lot in the strengthening and repair of bones. What is also amazing is that the body actually stops producing vitamin D even if you decide to expose yourself to sunlight for a longer period, making a vitamin D overdose due to excessive sun exposure impossible. Moreover, there are several factors that actually influence the reduced production of vitamin D.
The use of sun creams is actually one factor that reduces the body’s ability to absorb vitamin D. This is because the cream blocks away the UV rays and prevents the entire process of vitamin D production through sun exposure. Studies have already proven that sun exposure can cause negative effects to the skin, which is why the use of sunscreen is still highly encouraged. Moreover, a limited exposure of about 15 – 20 minutes is considered not threatening especially when it is done when the sunlight is not that harsh.
Obesity and being overweight are also factors that greatly influences vitamin D absorption. Overweight and obese people are more likely to have vitamin D deficiency. Age is also another important factor as ageing affects the skin’s capability to produce vitamin D when it is exposed to sunlight.
Another skin-related factor is skin pigmentation. People with dark pigmentation need longer sun exposure to be able to produce adequate amounts of vitamin D compared to those who have lighter skin pigmentation, who will be able to get the same amount of vitamin D in less time.
Sunlight triggers Vitamin D production in our bodies
All the factors mentioned above decrease the body’s ability to produce vitamin D with the help of the sun. Nevertheless, you should be able to understand that the vitamin can also be acquired through eating certain types of food. A lot of medical sources that are easily accessible provide a list of foods that will be able to provide you with your daily vitamin D requirements. These sources also provide you with dose limits, which are suggested to range from 400 IU to 2000 IU. A daily dose that exceeds 10,000 IU will lead to vitamin D overdose, which causes multiple complications, but it is impossible to get that particular dosage through sun exposure or food consumption, only the abuse of vitamin D can cause the over dosage.
