The following websites provide reliable information about kidney disease and patient support:

- [National Kidney Foundation](http://www.kidney.org/)
- [National Kidney Disease Education Program](https://www.niddk.nih.gov/health-information/communication-programs/nkdep)
- [American Association of Kidney Patients](http://www.aakp.org/)
- [Potassium and Kidney Disease](http://www.kidney.org/atoz/content/potassium.cfm)
- [Phosphorus and Kidney Disease](http://www.kidney.org/atoz/content/phosphorus.cfm)