Lemon water is not a “miracle” for a single organ. Most of its benefit comes from improved hydration and replacing sugary drinks. Some people find it refreshing for digestion, but acidity can worsen reflux in sensitive individuals. It provides vitamin C, but it does not “guarantee” immune protection. For kidney stone risk, citrate may be supportive in some contexts, but this depends on personal risk profile. In short, lemon water can be a good beverage choice; benefits make sense within an overall lifestyle system.