How far are parents willing to go to give their children the best chance at life? A new genetic test promises to reduce the risk of diseases like Type 1 diabetes in embryos. But it could also be used to optimize traits, like intelligence. VICE News explores the promises and perils of this technology.

Correction: A previous version of this video stated inaccurately that Down's Syndrome was caused by a mutation in a single gene. It is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21.

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