When taking vitamin D3 in the form of food supplements, one should always adhere to the recommended daily dose. An excess of vitamin D3 is not bad, it is excreted through the urinary tract in the human organism.
The vitamin D level can be determined by a blood test at a doctor's office. This is often determined if a vitamin D deficiency is suspected. Insufficient vitamin D formation is caused by a reduction in sunlight, especially in the winter months.
Many people are in the sun a lot in the summer. This allows the human organism to produce vitamin D3 itself. However, more and more people suffer from a vitamin D3 deficiency. The reason for this is the dark seasons and leaving work later and later. As a result, less and less vitamin D3 is absorbed. However, vitamin D3 can be supplemented in the form of food supplements.
Mostly foods of animal origin contain large amounts of vitamin D3. Especially fatty fish are good suppliers of vitamin D3. Fatty fish are for example salmon, herring and mackerel. Somewhat less vitamin D3 content have offal such as liver, offal and eggs. Few vitamin D3 contain mushrooms and dairy products. Whole grain products, coffee and tea do not contain vitamin D3.
An insufficient magnesium supply promotes the development of a vitamin D3 deficiency. Magnesium is needed so that vitamin D3 can be converted into its active form. In turn, vitamin D3 promotes the absorption of magnesium in the intestine. Magnesium and vitamin D3 are responsible for essential tasks in the human organism.