Vitamin D is produced by the body through direct skin exposure to the Sun. You may be deficient in Vitamin D if you spend a lot of time indoors. Other sources of Vit D are Oily fish such as mackerel, sardines and Salmon also found in eggs. Home tests are available online if you think you may have low Vit D levels.
Vitamin D supports healthy bones, muscle function and contributes to a healthy immune system.