It's not yet known if men face the same risk as the results came from a study only involving 70,000 female nurses.
Yet researchers found eating whole fruits instead actually reduced the risk of diabetes.
Experts believe the natural sugars in juice are absorbed too rapidly in the stomach, causing a surge in blood sugar levels.
This does not apply to solid fruit as the fibre slows its digestion.
The study has been published in the journal Diabetes Care.