No. There are some foods to avoid, but not any to help. Consult with a dietician who is informed about kidney disease, who can tailor a diet program for you.
Kidney injury. What is the cause of the kidney injury? Typically a food is not a recovery agent for kidney failure.
Work with a doctor. It is very important that you work with a doctor and nutritionist to monitor your kidney function and personalize your eating plan. Here is a good website with some general advice: http://www.Davita.Com/kidney-disease/diet-and-nutrition/lifestyle/top-15-healthy-foods-for-people-with-kidney-disease/e/5347.
No. While no foods improve kidney function, avoidance of some foods can be helpful. Talk to your doctor or a dietitian for tips for a diet that will not harm your kidneys.