@jmc50 first, it involves bigtime hydration….avoids sodium, potassium and phosphorus as much as possible…go low on sugar..it limits dairy and protein (though plant proteins are okay)… avoid alcohol and sodas ! ….highly processed foods must be very limited …careful with carbs..there are good lists online from reputable sources like Mayo Clinic, Cleveland Clinic…this is just a barebones outline…depending on the level of one’s kidney function, it can be more, or less strict. One can find plenty to eat, though, fresh fruits and veggies and a creative spirit in the kitchen makes a difference.