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Roman Pawlak

What about Vitamin D?

Vitamin D, like vitamins A, E, and K, belongs to a group of fat-soluble vitamins. There are two forms of vitamin D: cholecalciferol and ergocalciferol. Cholecalciferol is produced in the skin of humans and animals under the influence of sunlight. Ergocalciferol is produced in some plants, provided that they have adequate exposure to the sun. Both cholecalciferol and ergocalciferol are forms that are not biologically active. Their activation occurs in two steps, the first of which takes place in the liver, while the second takes place in the kidneys.

What is Vitamin B12 and Why is it Important?

The science of nutrition is fascinating, practical, and progressive. As new discoveries regarding specific issues, diets, and nutrients are made, nutrition professionals gain better understanding and sometimes revise existing recommendations. Vitamin B12 is a good example. Findings made in the last few years challenged many assumptions regarding this nutrient and forced scientists to rethink important aspects regarding vitamin B12 needs and recommendations, and deficiency criteria, prevention, and treatment. The information in this article highlights a few of these new discoveries.

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