Gethin Jones and Sam Quek are joined by Dr Xand, who discusses the importance of having vitamin B12 in your diet. Mark Lane is at the Hampton Court Palace Garden Festival talking about the highlights. Show more
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Gethin Jones and Sam Quek are joined by Dr Xand, who discusses the importance of having vitamin B12 in your diet. Mark Lane is at the Hampton Court Palace Garden Festival talking about the highlights. Show more
BBC One
