What is a good diet for people with bad kidney disease?

DASH diet. (google dash diet for hypertension). The specific dietary restrictions depend on how severe your kidney disease and what your labs look like. Generally, we recommend: low sodium (salt), low potassium (depends on blood potassium level) and low phosphorus diet. Some experts recommend a low protein diet but this is controversial.
Avoid toxins in diet. Avoid sugars, fried foods, vegatable oils like canola & soy, meats that are cured wth nitrates & nitrites, aspartame, splenda, partially hydrogenated vegetable oils, maragarine, soy based products, sweetened beverages like juice & soda, microwaved foods, artificial colors & flavors. All of these products cause damage to the cells, tissues & organs in your body contributing to various diseases.