What is prediabetes?What are the main signs and symptoms of prediabetes?How is prediabetes diagnosed?What are some of the main medical treatments for prediabetes?How could diet affect prediabetes?Have any supplements been studied for prediabetes?Are there any other treatments for prediabetes?What causes prediabetes?Do clinical features differ between people with prediabetes?How does a high-protein diet affect people with prediabetes?