Learn about Vitamin B12

Good for:
• Nerve formation and making red blood cells

Signs of deficiency:
• Tiredness due to anaemia and abnormalities of nervous system function

Good sources:
• Fish, liver, beef, milk and cheese (preferably organic)

Vitamin B12 deficiency:
• Often experienced by vegetarians and vegans because our dietary sources of vitamin B12 are animal in origin

Recommended daily requirements:
• 1 microgram. No danger of overdose exists so there is no real upper limit. The vitamin dissolves in water and excess is excreted in urine

B12 is destroyed by:
• Water, sunlight, alcohol, oestrogen (The Pill and HRT) and sleeping pills