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In addition to fatigue, a deficiency of B12 can lead to other symptoms like pale skin, headaches, depression, gastrointestinal problems, difficulty concentrating, decreased mental function, mouth and tongue pain or inflammation, and paresthesia in your hands and feet

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The removal of damaging microorganisms in the gastrointestinal system is what helps to prevent digestion conditions like inflammatory bowel disease (IBS) or Candida

The government established the National Institute for Health and Clinical Excellence to provide authoritative, independent advice to the NHS on different health-related interventions and forms of care

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High-dose supplementationparticularly intramuscular injections that can deliver 1,000 micrograms or morecreates substantially elevated serum B12 levels compared to dietary intake, which may more readily trigger these bacterial changes, though comparative studies between different forms are limited