Cauliflower. Cauliflower is a versatile vegetable that may be consumed by patients with CKD. With the proper preparation, it may be used in place of rice, mashed potatoes, and even pizza dough. Cauliflower also includes a variety of nutrients without being very high in sodium, potassium, or phosphorus. However, research does show that people with kidney disease should consume less than about half of their recommended daily volume of cauliflower. The American Cancer Society warns that those who suffer from kidney disease should not eat any form of cauliflower because of its content of substances known as glucosinolates. These chemicals are found in cauliflower and other members of the cabbage family, and have been linked to cancer in laboratory experiments on animals. However, this doesn't mean that you need to avoid all forms of cauliflower- just read the labels carefully before eating anything packaged or sold in bulk. You should seek advice from your doctor before consuming any product that states it can protect against cancer. Additionally, vegetables such as cauliflower contain large amounts of water which may lead to increased blood pressure and fluid retention in those who are already at risk for developing this problem. So while cauliflower is not harmful to have in your diet, it's important to consider your overall health when deciding what kind of food you should be eating.