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            Vitamin A Absorption

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            Vitamin A Absorption

            Published by Dr Josรฉ Costa at 28/04/2021

            As we spoke before, ๐•๐ข๐ญ๐š๐ฆ๐ข๐ง ๐€ is ๐˜ง๐˜ข๐˜ต-๐˜ด๐˜ฐ๐˜ญ๐˜ถ๐˜ฃ๐˜ญ๐˜ฆ.โฃโฃ

            We donโ€™t eat Vit A, even in supplements.โฃโฃ

            When we consume fruits, vegetables or supplements, in reality, we are taking something called โ€œ๐˜ณ๐˜ฆ๐˜ต๐˜ช๐˜ฏ๐˜บ๐˜ญ ๐˜ฆ๐˜ด๐˜ต๐˜ฆ๐˜ณ๐˜ดโ€ (also known as preformed Vit A) or ๐˜ฑ๐˜ณ๐˜ฐ๐˜ท๐˜ช๐˜ต๐˜ข๐˜ฎ๐˜ช๐˜ฏ ๐˜ˆ.โฃโฃ

            One way or another, they suffer alterations to become ๐˜ณ๐˜ฆ๐˜ต๐˜ช๐˜ฏ๐˜ฐ๐˜ญ๐˜ด. This is simply because those are easier absorbed in the small bowel.โฃโฃ

            • As they are absorbed, small molecules called โ€œ๐œ๐ก๐ฒ๐ฅ๐จ๐ฆ๐ข๐œ๐ซ๐จ๐ง๐ฌโ€ will transport them into the Liver.โฃโฃ
            • If the Liver has reached its full capacity of Vitamin A, other small molecules called ๐•๐‹๐ƒ๐‹ (๐˜๐˜ฆ๐˜ณ๐˜บ ๐˜“๐˜ฐ๐˜ธ-๐˜‹๐˜ฆ๐˜ฏ๐˜ด๐˜ช๐˜ต๐˜บ ๐˜“๐˜ช๐˜ฑ๐˜ฐ๐˜ฑ๐˜ณ๐˜ฐ๐˜ต๐˜ฆ๐˜ช๐˜ฏ๐˜ด) will transport it (often already changed into retinyl palmitate) to other tissues.โฃโฃ

            Those tissues are mainly:โฃโฃ

            1. Adipose tissue (AKA fat)โฃโฃ
            2. Lungsโฃโฃ
            3. Kidneysโฃโฃ

            Another group of molecules called ๐‹๐ƒ๐‹ (๐˜“๐˜ฐ๐˜ธ-๐˜‹๐˜ฆ๐˜ฏ๐˜ด๐˜ช๐˜ต๐˜บ ๐˜“๐˜ช๐˜ฑ๐˜ฐ๐˜ฑ๐˜ณ๐˜ฐ๐˜ต๐˜ฆ๐˜ช๐˜ฏ๐˜ด) might also do that transport.โฃโฃ

            ๐•๐ž๐ซ๐ฒ ๐ข๐ฆ๐ฉ๐จ๐ซ๐ญ๐š๐ง๐ญ ๐ญ๐จ ๐ค๐ง๐จ๐ฐ:โฃโฃ

            • VLDL and LDL are what is called โ€œbad cholesterolโ€โฃโฃ
            • ๏ธHDL is what is called โ€œgood cholesterolโ€โฃโฃ

            Bear in mind any disease affecting the bowels (and I am referring to the ๐˜ด๐˜ฎ๐˜ข๐˜ญ๐˜ญ ๐˜ฃ๐˜ฐ๐˜ธ๐˜ฆ๐˜ญ) will affect fat absorption capacity. In turn, this will affect Vitamin A absorption as well.

            Remember we spoke about Vit A being fat soluble?โฃโฃ

            Conditions that affect Vit A absorption:โฃโฃ

            1. Cystic Fibrosisโฃโฃ
            2. Pancreatic problemsโฃโฃ
            3. Inflammatory Bowel Diseaseโฃโฃ
            4. Cholestasis (conditions preventing bile passing to the bowel, from the Liver)โฃโฃ
            5. Small bowel bypass surgeryโฃโฃ
            6. Significant parasitic infestationโฃโฃ
            7. Kidney problemsโฃโฃ
            8. Alcoholismโฃโฃ
            9. Low fat in the dietโฃโฃ

            People with any of these conditions should take ๐•๐ข๐ญ ๐€ ๐ฌ๐ฎ๐ฉ๐ฉ๐ฅ๐ž๐ฆ๐ž๐ง๐ญ๐ฌ.โฃโฃ

            When Vit A is not absorbed, it will be excreted in stools.โฃโฃ
            The one that becomes inactivated in the bloodstream will be excreted in the urine.โฃโฃ

            The big problem is that our body absorbs Vit A better than it destroys it.
            This can lead to excessive accumulation and ๐•๐ข๐ญ ๐€ ๐ญ๐จ๐ฑ๐ข๐œ๐ข๐ญ๐ฒ.

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            Dr Josรฉ Costa
            Dr Josรฉ Costa

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