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Many people immediately think of vitamin D or C when they have problems with the immune system or are prone to infections. But who thinks of vitamin A? 😃
🧬 Vitamin A is much more than just an active ingredient in skin creams. It is also an essential nutrient for our mucous membranes and immune system. For example, vitamin A regulates the growth of epithelial cells, i.e. the cells that form the cover of your skin and internal mucous membranes. In the mucous membranes in the mouth, lungs and intestines, it also supports the cohesion of these cells and in this way enables the formation of a robust barrier so that pathogens cannot penetrate. It also promotes the formation of mucous substances (mucins), which capture pathogens or foreign particles on the mucous membranes and thus help them to be excreted.
🛡️ Vitamin A also plays a role in regulating the immune response. For example, it supports T-lymphocytes, your body's soldiers that fight invading pathogens. It also promotes the function of T-regulatory cells, which in turn suppress autoimmune reactions and maintain tolerance to harmless antigens (such as pollen or food). So if you often suffer from colds or allergies and intolerances, a vitamin A deficiency could be the reason.
On the other hand, in the outer skin, vitamin A promotes the production of keratin, which makes your skin mechanically resilient and thus protects it. 😉
👉 By the way: Vitamin A and vitamin D work synergistically and a one-sided high intake of one can even hinder the effectiveness of the other. So always think about both! You will find out how to cover your vitamin A needs in the coming articles; )
