Is Peanuts Good for Creatinine? levels when eaten in moderation, especially for people without advanced kidney disease. They provide plant protein, healthy fats, and antioxidants that support overall kidney health. However, peanuts are also moderately high in phosphorus and potassium, which may increase creatinine in CKD patients if consumed in excess. Therefore, people with high creatinine should consult a doctor or dietitian before adding peanuts regularly to their diet.