By Elise Viebeck - 12/21/12 03:44 PM EST
"Endocrinologists estimate there are fewer than 45,000 U.S. patients who might legitimately take HGH," the wire service wrote. "They would be expected to use roughly 180,000 prescriptions or refills each year … U.S. pharmacies last year supplied almost twice that much HGH — 340,000 orders."
Medicare also allowed roughly 22,000 HGH prescriptions in 2010, representing a five-year increase of 78 percent, according to the AP.
Read more of the investigation here.