Tea Time: Vitamin B12

• Role in body
  • red blood cell formation
  • cell metabolism
  • nerve function
  • production of DNA
• Vulnerable populations
  • Vegans
  • Older adults
  • Those with undiagnosed or poorly managed celiac
  • Other conditions that affect absorption of nutrients
  • Bariatric surgery
  • Renal disease
  • Those taking certain medications
    • metformin
    • PPIs
    • Colchicine for gout
    • aminosalicylic acid
• RDA for adults: 2.4mcg (Excess is not absorbed)
• Signs of deficiency
  • weakness, tiredness, lightheadedness
  • palpitations, shortness of breath
  • pale skin
  • constipation, diarrhea, loss of appetite
  • numbness or tingling, muscle weakness
  • vision loss
• Sources
  • Animal products
    • Meats (red meat, poultry, fish)
    • Eggs
    • Dairy
• Vitamin C can interact