According to a study from PLOS Medicine, that seems to be correct.
The study was led by Dr. Dariush Mozaffrarian from Tufts University in Massachusetts and Fumiaki Imamura from the University of Cambridge in the UK. They analyzed the carbohydrate and fat content in the meals of 4,660 adults, monitoring how their influence in type 2 diabetes.
The results suggested that exchanging dietary carbohydrate with saturated fat does not affect the levels of blood sugar. However, it was shown that changing a diet from carbohydrate and saturated fat to one rich in unsaturated fat improves the regulation of blood glucose.
“A DIET RICH IN UNSATURATED FAT IMPROVES THE REGULATION OF BLOOD GLUCOSE”
But you might be wondering, “what does this mean for me?” The bottom line is that consuming more unsaturated fats, particularly polyunsaturated, instead of either carbohydrates or saturated fats will help you have a better blood glucose control. These findings support benefits of consuming more vegetable oils, fish , nuts, and vegetables rich in unsaturated fats like avocados or olives.