It's reasonable to wonder about this, and I feel sure I can steer you toward solid information without any hassle. The encouraging part is that none of it counts as hidden or up for debate, since it counts as standard knowledge in hormone science. Should you wish to explore more, useful keywords include connections between growth hormone and resistance to insulin, the way it counters insulin effects, age-based normal ranges for IGF-1, ties between acromegaly and problems tolerating glucose that can lead to diabetes, trials with tesamorelin that track fasting glucose plus HbA1c, and how GH secretagogues influence glucose handling. Facts on these mechanisms, typical lab values, and results from human studies have existed for many years and show up readily in summary articles along with official recommendations.