Health Web: Five Kidney-Friendly Vegetables Many People Avoid, with Bitter Melon Ranked First for Blood Sugar Control

Cilantro and bitter melon may be among the vegetables people avoid most, but a physician says they deserve a place on the kidney-health plate. Hung Yung-hsiang, head of the Hung Yung-hsiang Clinic, describes five commonly disliked vegetables as “picky eaters’ nightmare vegetables” that contain compounds linked to antioxidant, anti-inflammatory and blood-sugar benefits.

Bitter melon takes the top spot. The article says bitter melon glycosides and plant insulin can help stabilize blood sugar, an important consideration because diabetes is a major cause of kidney failure and dialysis. Controlling blood sugar at its source, Hung says, reduces pressure on the kidneys’ filtering system.

The list also includes garlic and onions, ranked second for their allicin and quercetin content; red and yellow peppers, which provide abundant vitamin C while containing relatively moderate potassium compared with some dark-green vegetables; eggplant, whose skin contains the antioxidant nasunin; and cilantro, which contains phytochemicals and flavonoids.

Hung cites a 2025 systematic review and meta-analysis in the Journal of Renal Nutrition that included 121,927 participants and found an association between plant-based diets and a lower risk of chronic kidney disease. He cautions, however, that kidney protection does not depend on a single “superfood.” His formula is dietary variety, natural foods, less salt and fewer ultra-processed products.

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Kidney protection is not about relying on one superfood.