There's the old saying of "an apple a day keeps the doctor away." But maybe it should be an orange. A new study by researchers at Harvard Medical School and Massachusetts General Hospital says eating an orange a day may lower a person's risk of depression by 20%.

Could a simple orange a day help prevent depression? A groundbreaking study suggests it might. Researchers found that people who regularly ate citrus had a significantly lower risk of developing depression,

A study published in the journal BMC Microbiome found a link between eating citrus and depression risk, suggesting that you may be able to lower your risk of developing depression by doing something as simple as adding oranges into your daily diet.