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[29] [30] Other supplements taken alongside B12, particularly magnesium, vitamin C in high doses, or probiotic preparations, may affect bowel habits
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Increased risk of diarrhea-predominant irritable bowel syndrome (IBS-D) Increased insulin resistance and glucose intolerance, contributing to elevated blood glucose Poor wound healing, altered taste and smell, and changes in cognitive function, particularly in older adults How common is zinc deficiency
Do dietary deficiencies always need injections
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B12 shots may help restore healthy red blood cells, alleviate symptoms like fatigue and weakness, and offer faster benefits compared to oral vitamins
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