French fries significantly raise type 2 diabetes risk, but boiled potatoes don't, a crucial distinction buried in a decades-long study of 205,000 health professionals.

Participants were followed up on for close to four decades. All of them were free of diabetes, heart disease, and cancer when the study began. Among the participants, 22,299 ended up developing type 2 diabetes.

Potato consumption weekly was associated with an increased risk of developing diabetes. However, the manner in which the potatoes were prepared made all........

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