GoodRx HealthIs Lemon Water Good for You? A Dietitian Separates Fact From Fiction

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Recent clinical evidence demonstrates the therapeutic potential of lemon water consumption, particularly in preventing kidney stones and supporting metabolic health. Although social media often overstates its benefits, research indicates specific physiological effects, including citrate’s role in calcium oxalate stone prevention and the impact of citric acid on postprandial glycemic response. The evidence presents both validated benefits and important clinical considerations for patient recommendations.

Key Points:

• Clinical evidence from the National Kidney Foundation supports daily lemon juice consumption (120mL fresh squeezed) for reducing kidney stone recurrence, specifically targeting calcium oxalate formation through increased citrate levels.
• Glycemic control shows improvement with lemon water consumption during meals, attributed to citric acid’s modulation of carbohydrate absorption and potential enhancement of insulin sensitivity.
• Cardiovascular benefits emerge from citrus flavonoids, with research indicating positive effects on blood pressure and arterial health, though specific dosing requirements remain under investigation.
• Contraindications include increased risk of GERD symptoms and potential dental enamel erosion, requiring specific patient guidance on consumption methods and timing.
• Vitamin C content provides 20% of daily requirements per lemon, supporting immune function, wound healing, and iron absorption, offering a practical alternative to supplementation.

HCN Medical Memo
Although lemon water shows promise in specific clinical applications, particularly kidney stone prevention and metabolic health support, practitioners should consider individual patient factors, including GERD history and dental health, when making recommendations.

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