Vitamin D: Your Source of Winter Sunlight

Vitamin D: Your Source of Winter Sunlight

Vitamin D3 belongs to the fat-soluble vitamin group and is well known for its role in the maintenance of strong bones. However, it can do a lot more...

Vitamin D3 in Food

Vitamin D3 is found mostly in animal food products, and mostly only in relatively small amounts. Saltwater fish (like salmon, sardines and herring) and cod liver oil are some of the best sources for vitamin D3. To cover our daily needs for nutrition, these foods are not very effective. Who wants to eat herring every day though?

Development in the Skin

Vitamin D3 can also be developed in the human body. To produce vitamin D3, the body needs cholesterol, which is converted into vitamin D3 in the skin with the help of the UV-Rays of the sun. Finally cholesterol is activated in the liver and the kidneys and is converted into the vitamin D hormone, which activates the metabolism. 80-90% of the vitamin D3 in the body comes from the body’s own synthesis. Due to the lack of sun are exposed to from October-March, this synthesis comes mostly to a halt during winter.

The Function in the Body

The “Sun Vitamin” fulfills many different essential tasks in our bodies. It contributes to the normal absorption of calcium and phosphorous, which in turn provide for the maintenance of healthy bones. At the same time, vitamin D also contributes to the normal function of the immune system and has a role in cell division. Additionally, it also contributes to normal muscle function and to normal teeth health.  

Supply for Maintenance

The Austrian National Nutrition Report and the National Nutrition Survey II provide a good basis for understanding the state of nutrition of the Austrian population. These studies show that the average vitamin D intake is well under the recommended dosage. These surveys make it clear that a lack of vitamin D is a risk especially for children and elderly people.

Nutrition and Micronutrients

Like all micronutrients, achieving a balanced vitamin D3 level is absolutely worthwhile. Analysis of how much vitamin D3 is stored in the blood provides information about the individual's ideal nutrition. Balancing your vitamin D3 levels after discovering higher needs can contribute to a normal function of the immune system, vitality and general well being.

Due to the lack of natural sunlight during winter, vitamin D synthesis in the body comes almost completely to a stop.