The D vitamin is the only vitamin which is not obtained from foods which are consumed. Instead, the D vitamin is really obtained by sunlight on the skin. There has been lots of media coverage about the dangers of obtaining too much sun but it’s vital that the skin is exposed to sunlight to acquire the recommended daily allowance of the D vitamin. In reality, the amount of time that an individual has to spend inside the sun to obtain a sufficient dose of the D vitamin is very small and just a couple of minutes a day is going to be sufficient and not have any adverse effects from the amount of ultra-violet light received.
The most critical function of the D vitamin would be to support control how a lot calcium is absorbed from food. The majority of the calcium is employed to construct strong teeth and bones but it is also required to send messages along the nerves and to assist muscles, for instance the heart muscles, to contract. It is the D vitamin that ensures that there is constantly sufficient calcium in the blood to perform these tasks. Other functions that require the D vitamin relate to the immune system and it is believed that it is also a contributing factor in reducing the risk of contracting cancer and, in specific, colon cancer.
The variant of the D vitamin that is formed under the skin is referred to as vitamin D3, or cholecalciferol. This D vitamin is created when the ultraviolet within the sunlight reacts with a sort of cholesterol that’s found under the skin naturally. The D3 is converted into a additional active form of the d vitamin in the liver and is then diverted to where it is required the most. Some of the D vitamin remains in the liver and kidneys to aid reabsorb the calcium from the blood. The rest of the D vitamin is dispersed to the bones to help them retain their calcium as well as the intestines to aid absorption of calcium from food.
Even though the majority of the D vitamin is formed by means of the exposure of the skin to sunlight you’ll find some foods that do contain some of the vitamin naturally. This form of the D vitamin is referred to as vitamin D2, or ergocalciferol. This is used inside the same way as the other D vitamins and is the sort used to create the majority of D vitamin supplements.
↑ Back to Top