Too Many Fries? New Study Links French Fries to Increased Diabetes Risk

If French fries are your go-to comfort food, you may want to think twice before placing your next order. A major new study published in The British Medical Journal has found that eating three or more servings of French fries per week could increase your risk of developing type 2 diabetes by 20%.

The research, led by an international team including scientists from the University of Cambridge, analysed dietary data spanning nearly 40 years from over 205,000 US medical professionals. It tracked their eating habits and health outcomes, documenting more than 22,000 cases of type 2 diabetes over the course of the study.

Interestingly, the increased risk was specific to fried potato products, particularly French fries. The same effect was not observed for baked, boiled, or mashed potatoes.

"The association between higher potato intake and increased type 2 diabetes risk is primarily driven by intake of French fries," the study authors noted.

How Cooking Method Makes a Difference

While potatoes themselves contain essential nutrients like fibre, potassium, and vitamin C, how they're cooked makes a significant difference. When deep-fried, potatoes absorb large amounts of oil, becoming calorie-dense and high in unhealthy fats. Frying also creates harmful compounds that may interfere with insulin sensitivity and contribute to long-term metabolic issues.

French fries sold commercially often contain added salt and preservatives, which can further increase the health risks when consumed frequently.

Diabetes and Diet: A Bigger Picture

Type 2 diabetes is influenced by several factors, including genetics and lifestyle. However, diet plays a key role. Experts advise adopting a balanced diet rich in whole grains, fruits, vegetables, legumes, and lean proteins, and cutting back on fried or processed foods.

While the occasional portion of fries may not pose a serious threat, the study highlights the importance of moderation and mindful eating—especially when it comes to deep-fried favourites.