A large study found an unexpected link between citrus fruit and skin cancer.
Researchers looked at the diets of more than $100,000 Americans.
Those who had about one and a half servings of citrus per day had a 36% higher risk of melanoma.
The link was stronger in people who drank whole grapefruit juice and orange juice.
The study's authors believe a substance found in citrus fruit can make the skin more sensitive to sunlight.
The American Society of Clinical Oncology called the findings "intriguing" but said it's too soon to change dietary recommendations about grapefruit and oranges.