Essential for calcium absorption and bone mineralization, it facilitates the stability of the nervous system and supports proper blood clotting.
A deficiency can lead to skeletal and muscle-related diseases and increases the risk of dental caries.
It may also have a positive effect on the respiratory system and help fight lung diseases, including those caused by smoking.
Known as Cholecalciferol, it is a steroid not unlike cholesterol and testosterone.
It is found in many foods and especially in fish, including mackerel, sardines, eels, herring, salmon, and trout; it is also found in dairy products, eggs, and poultry fat.