🍊 Citrus Fruits

Citrus fruits — oranges, grapefruits, lemons, limes — are a stone patient's friend on two counts: they are low in oxalate, and they deliver citrate, which binds calcium in urine and inhibits stone growth. Lemon and lime are particularly useful because a squeeze into water adds citrate with essentially no oxalate. Oranges and grapefruit are low-oxalate whole foods. The only caveat is juice: citrus juice retains the citrate but concentrates the sugar, so whole fruit or a modest glass is the better pattern.