MACON, Georgia (41NBC/WMGT) — Prediabetes can provide patients with an opportunity to make changes before developing diabetes, according to a Piedmont Macon physician. Dr. Gerardo Blanco, a second-year internal medicine resident physician at Piedmont Macon, said prediabetes is the stage before diabetes and gives physicians an opportunity to intervene. “It’s the only moment that physicians have that patient to prevent diabetes,” Blanco said. “Unf…