Vitamin D is a fat-soluble vitamin, meaning it can be stored in the body.
The primary function of vitamin D is to facilitate the intestinal absorption of calcium and to balance calcium and phosphorus levels in the blood to ensure optimal bone mineralisation. However, we now know that vitamin D has a lot more applications than just keeping our bones healthy.
As a matter of fact, it also helps regulate several metabolic functions, such as blood pressure and immune system function. Studies have also suggested that this vitamin is involved in hair growth and restoration.
We get most of the vitamin D we need from our skin cells, which synthesise it from cholesterol following exposure to UV rays.
A small portion of our needs (approximately 20%) comes from food sources, such as cod liver oil, oily fish (salmon, sardines, mackerel), eggs, meat and dairy products.
DID YOU KNOW ?
Severe vitamin D deficiency is the cause of two illnesses: rickets in children and osteomalacia (soft bones) in adults.
SUPPLEMENTS & CONTRAINDICATIONS:
Reduced levels of sunlight in France between October and February keep us from getting our daily requirement of vitamin D. However, since it’s fat-soluble, vitamin D can be stored by the body after UV ray exposure during peak periods of sunlight (March to September).
Taking a supplement during the winter period is still a good idea, and is recommended for anyone at risk of deficiency, or in years with fewer sunny days.