Consume less carbs. Avoid sugary sodas and junk foods. Include foods which are good for liver like almonds, beets, blueberries, garlic, oats, salmon, soybeans and cruciferous vegetables to your diet. You should also include foods which keep kidneys healthy; like red bell peppers, onions, apples, oranges, grapes, sweet potatoes, eggs, olive oil, tuna, strawberries and cauliflower in your diet.