Many of the early studies using high GH doses (≥0.01 mg/kg/day) reported that fasting glucose and insulin levels increased after short-term GH treatment for less than 6 months, but were usually restored to baseline levels after 1 or 2 years of GH treatment (Table 1).

Effects of growth hormone on glucose metabolism and insulin resistance in human - PMC

just a blip from an article I recently read. In my opinion research is suggestive, as different people will have different results and outcomes.