They may minimize your risk of kidney stones
Kidney stones can form when you have higher-than-normal amounts of stone-forming minerals in your urine or when your urine is very concentrated—and one type of kidney stone is caused by low levels of citrate in urine. Citrus fruits can raise the levels of citrate in your urine lowering this way the risk of kidney stones.
They may help fight against cancer
Many studies have linked citrus fruits to a reduced risk of certain cancers. In one study, people who ate one grapefruit or drank one serving of grapefruit juice daily had a lower risk of lung cancer. Citrus fruits protect you against cancer because they contain a host of plant compounds, including flavonoids.