The only reason I can think that a person would want to avoid carbs and GH is because of the infrequent side effect of causing a case of mild hyperglycemia. If you're one of the very few people that get hyperglycemia after injecting GH and you ingest a high carb food or beverage around the same time, it could turn into a severe case of hyperglycemia. Outside of that, I don't know what to tell you.