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People who have difficulty absorbing vitamin B12, such as those with Crohns disease, may benefit from B12 injections which avoid the need for absorption in the digestive tract

Why It Matters: Food in the digestive system competes for absorption, reduces bioavailability, and may bind to the compound, limiting effectiveness

For patients who are nervous about needles, it often helps to know that the appointment is short and that the injection itself takes only a small amount of time

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