Vitamin A is a fat-soluble vitamin crucial for maintaining healthy vision, immune function, skin integrity, and thyroid health. It helps regulate the metabolism of thyroid hormones, supporting their production and release, which are essential for metabolic processes.
The body obtains vitamin A from dietary sources like liver, fish oils, and colorful fruits and vegetables such as carrots and spinach.
Vitamin A primarily exists in two forms: retinoids (such as retinol and retinoic acid) and carotenoids (such as beta-carotene). These forms are already biologically active or can be converted into active forms within the body.
Vitamin A can be found in both animal-based and plant-based foods. Here are some examples of foods rich in vitamin A:
Including a variety of these foods in your diet can help ensure you get adequate amounts of vitamin A, supporting vision, immune function, and overall health. Animal-based sources provide vitamin A in its readily usable retinoid form, while plant-based sources provide carotenoids, which the body can convert into retinoids.
Vitamin A is essential for a variety of chemical processes in the body, playing crucial roles in vision, immune function, reproduction, and cellular communication.
Vitamin A is essential for vision, immune function, cell growth and differentiation, reproduction, skin health, and protection against oxidative stress.
Its active forms, retinol, retinal, and retinoic acid, participate in various biochemical processes that are crucial for maintaining overall health.
Vitamin A and retinoids help the immune system and the development of certain immune cells called Treg cells. They can influence how these cells grow and respond, especially when there are high levels of a substance called IL-2. Vitamin A helps balance immune responses by reducing inflammation and supporting gut health, which protects against diseases like type 1 diabetes and multiple sclerosis.
Hashimoto's thyroiditis (HT) is a common autoimmune disease that affects the thyroid. It starts with inflammation driven by Th17 cells and later involves Th1 cells. In some cases, Th2 cells are also involved. A study found that certain genes related to vitamin A can affect how severe HT is and who is more likely to get it.
In HT patients, an imbalance in gut bacteria (dysbiosis) affects nutrient absorption and triggers autoimmunity. This imbalance and a leaky gut barrier are major factors in autoimmune diseases. Although more research is needed, vitamin A seems to protect the gut barrier, suggesting it may play a regulatory role in managing Hashimoto's thyroiditis.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9592814/
The contents presented here are solely for neutral information and general education. The texts make no claim to completeness, nor can the timeliness, accuracy, and balance of the information provided be guaranteed. The texts in no way replace professional advice from a doctor or pharmacist, and they may not be used as a basis for independent diagnosis or initiation, modification, or termination of treatment for diseases. Always consult your trusted physician for health-related questions or complaints! I assume no liability for inconveniences or damages arising from the application of the information presented here.
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