Today in Europe, north of latitude 42 ° N, i.e. above an imaginary line between Barcelona, Bastia, Rome, about 70% of the adult population is deficient in Vitamin D and particularly women in menopause, elderly men , overweight people, people with dark complexions, or even those who wear very opaque clothing that slow down the production of vitamin D from UV rays; people who have little exposure to the sun or who live in areas with little sunshine, women who are breastfeeding, vegetarians.

Vitamin D is essential for bone, muscle and dental capital, but also for maintaining an optimal immune system and preventing the early signs of aging.

Vitamin D can have two origins, both naturally processed in the skin thanks to the action of ultraviolet rays, and brought by food.

Vitamin D supplied by large fish (salmon, cod, halibut, tuna) concentrates pollutants. Another source is the mutton fat from which the lanolin used for some vitamins is extracted. Vitamin D of vegetable origin can be supplied by yeast or mushrooms, naturally rich in ergosterol, precursor of Vitamin D. In order to propose a Vitamin D completely free from derivatives of animal or synthetic origin and easily digestible by everyone, even people with fragile liver, Holistica research has selected a yeast, which simply dried under UV rays, naturally develops its vitamin D content, such as our skin does it under the sun. It participates in the assimilation of calcium and phosphorus, as well as in the balance of cell division. Vitamin D also participates in a good balance of the immune system.