What is frailty?What are the main signs and symptoms of frailty?How is frailty diagnosed?What are some of the main medical treatments for frailty?Have any supplements been studied for frailty?How could diet affect frailty?Are there any other treatments for frailty?What causes frailty?What are the Fried Phenotype model and the Frailty Index (FI) criteria?What’s the difference between sarcopenia and frailty?