Bottle gourd, also known as lauki, is considered a healthy vegetable for people with chronic kidney disease (CKD) because it's low in sodium and potassium. Bottle gourd juice can also help with kidney health in other ways, including:
Reducing inflammation: Bottle gourd juice can help reduce inflammation in the kidneys.
Treating urinary tract infections: Bottle gourd juice can help treat urinary tract infections, especially when mixed with fresh lime juice.
Breaking calculus: Regular consumption of bottle gourd can help break up kidney stones.
Alkaline mixture: Bottle gourd can act as an alkaline mixture to treat kidney infections.
Bottle gourd is also rich in antioxidants and may help treat liver inflammation.
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Snake gourd (Tricosanthes cucumerina) is a fruit that is eaten as a vegetable and is considered protective for people with chronic kidney disease (CKD). It can help detoxify the kidneys, remove waste, and prevent kidney stones. Some say that drinking snake gourd juice is the best way to support kidney and bladder function.
Other vegetables that may be protective for people with CKD include: eggplant, ridge gourd, tomato, cucumber, and drumsticks.
Other foods that may be protective for people with CKD include:
Pulses and products like lentils, soy protein, green vegetables, and chickpeas
Fruits like apples, guavas, pears, papayas, cranberries, blueberries, raspberries, strawberries, and red grapes
Nuts and seeds like almonds and walnuts
Milk and milk products like low fat milk, low fat curd, and low fat paneer
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Bitter gourd (karela) is generally safe to eat in moderate amounts if you have kidney disease, but you should consult a healthcare provider before adding it to your diet. Some say that bitter gourd can help regulate creatinine levels in the blood, which is a waste product produced by muscles that the kidneys filter. High creatinine levels can be a sign of kidney disease. Other vegetables that may help with kidney disease include red bell pepper, cucumber, and onions.
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https://www.associatesinnephrologypc.com/2020/10/15/the-best-and-worst-foods-for-your-kidneys/
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