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You may also have an increased risk for vitamin B-12 deficiency if you: recently had weight loss surgery, because the operation interferes with your bodys ability to extract B-12 from food have been diagnosed with Crohns or celiac disease, conditions that can affect the way your body absorbs nutrients are over the age of 50, because the stomach beings to produce less acid as you age, and this acid helps with B-12 absorption take prescribed heartburn drugs, which reduce acid production in your stomach and may affect B-12 absorption If you suspect you have a vitamin deficiency, make an appointment with your doctor
doi:10.1016/b978-0-12-815849-4.00001-3
Oxidative stress markers in intestinal mucosa of Tunisian inflammatory bowel disease patients
In addition, zinc plays a vital role in the thyroid hormones metabolism by regulating thyrotropin-releasing hormone (TRH) and TSH synthesis and modulating the structures of essential transcription factors involved in synthesizing thyroid hormones (177, 178)
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