Onions are a fantastic source of sodium-free taste in renal-diet recipes. Reducing salt intake can be difficult, so finding tasty salt substitutes is essential. Sauteing onions with garlic and olive oil provides taste without jeopardizing kidney health. Onions also contain sulfites, which protect plants from bacteria and fungi. However, some people may experience sulfur-smelling breath after eating onions. Seeking medical advice before and during treatment for any condition can help prevent or reduce adverse effects from medications or other substances. In addition to being used as a seasoning, onion contains chemical compounds that have many healthy benefits when eaten in moderation. Scientists have identified more than 70 different compounds in onions that have various health benefits. They include antioxidants, nutrients, and enzymes that are all good for the body. However, like any food, onions can cause problems if you have certain medical conditions or are taking medications or other supplements. You should discuss any concerns with your doctor before beginning an onion consumption program.