Fats and oils: how do fats affect the absorption of vitamins?

One of the most important biological functions of fats in the human body is ensuring the full absorption of fat-soluble vitamins, which include vitamins A, D, E, and K. Without a sufficient amount of quality fats in the diet, these vital micronutrients simply cannot be absorbed in the gastrointestinal tract, leading to their deficiency even with a varied and vegetable-rich diet.

The mechanism of this process is related to the specifics of digestion. Fat-soluble vitamins do not dissolve in water, so a transport medium is necessary for their transportation through the intestinal wall into the bloodstream. This role is performed by fat micelles, which are formed in the small intestine under the influence of bile acids and dietary lipids. If you eat a salad of fresh carrots or spinach without a drop of oil or another fat source, you will absorb only a small fraction of the beta-carotene contained therein.

This is precisely why diets with a strict exclusion of all fats often lead to health problems, dull skin, brittle hair, and lowered immunity.

Understanding this interconnection helps build a truly balanced diet where fats are not an enemy of the figure, but a necessary tool for delivering nutrients to all cells of the body. Caring for the balance of fats on your plate is a direct contribution to your long-term health and beauty.