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December 30th, 2015

What human growth hormone (HGH) is, and how it’s used legitimately

This week's bombshell allegations against Peyton Manning have a lot of people talking about human growth hormone. The star NFL quarterback denies taking the drug and calls the allegations against him “complete trash.”  HGH is banned by the NFL and is tightly controlled by the FDA. NBC’s Stephanie Gosk reports for TODAY.

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