Onions are low in potassium, which makes them a good choice for someone with kidney damage or who is on a renal diet. When your kidneys are not working properly, your potassium levels may be too high, which can lead to muscle cramps, muscles weakness, and an irregular heartbeat.
Including onions in your diet not only helps you keep potassium levels under control, but they also add a boost of flavor that can make dishes more flavorful without a bunch of added salt or compromising kidney health.

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