Twins' diet contest has shocking result

A set of twins try out different diets and they get surprising results. CNN's Michaela Pereira has more.
A set of twins try out different diets and they get surprising results. CNN's Michaela Pereira has more.

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    Twins' diet contest has shocking result

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A set of twins try out different diets and they get surprising results. CNN's Michaela Pereira has more.