Eating citrus, like oranges and grapefruits, may lower the risk of developing depression by supporting better gut health. Dr.

So, why limit yourself to just citrus when you can enjoy a rainbow of vitamin C-rich foods? Go ahead and find a list of the top vitamin C-rich foods you may add to your diet! Vitamin C is a ...

Citrus fruits aren't the only food that can boost gut health, experts agree. Foods high in fiber like vegetables, legumes and whole grains are great for the gut, according to registered dietitian ...

Since citrus foods such as oranges, lemons and limes contain high amounts of citric acid, they can cause your stomach to produce more stomach acid. An increase in stomach acid can cause mild ...

A version of this story appears in the February 2017 issue of National Geographic magazine. Citrus, in many ways, stands alone. So many cultivated species have come from so few primary ancestors.