"Our research results show that following a healthy diet in early pregnancy reduces the risk of gestational diabetes," said first author, doctoral candidate Lotta Pajunen from the Institute of Biomedicine at the University of Turku.

The study also found that a higher dietary inflammatory index, meaning a diet that increases the low-grade inflammatory markers in the body was connected to an increased risk of developing gestational diabetes mellitus. Furthermore, higher consumption of fat and especially saturated fats was connected to gestational diabetes. This is of interest as the intake of saturated fats is known to increase the body's inflammation.

Several methods were used in the study to examine dietary intake in early pregnancy. These analyses revealed that a diet comprehensively promoting health is associated with a smaller risk of developing gestational diabetes.

"Eating vegetables, fruit, berries, and wholegrain products, as well as unsaturated fats, is particularly important. These nutrients and foods reduce inflammation in the body and therefore also the risk of gestational diabetes. Mothers who are overweight or obese already before the pregnancy would most likely benefit from dietary guidance in early pregnancy," said associate professor in Nutrition Kirsi Laitinen from the University of Turku, the PI of the Early Nutrition and Health research group that conducted the study

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