A study of 60,000 people in Singapore found people who drank two or more soft drinks a week had an 87 percent higher risk of developing pancreatic cancer.
Those who drank mostly fruit juice instead of soda did not have the same risk.
Researchers say sugar may be to blame, but they say people who drink a lot of sweetened sodas often have other poor health habits.
One 12-ounce can of regular soda contains about 130 calories. Almost all of that is from sugar.