A research study conducted by Tulane University compared HbA1c (a 3-month average marker for blood glucose levels) of two groups one of which was assigned a low-calorie diet. This group ate half of the daily calorie intake in healthy monounsaturated and polyunsaturated fats found in foods like olive oil and nuts. The other group ate their regular diet. The participants in the study had blood glucose levels in the prediabetic to diabetic range and none of them were on anti-diabetes medication..The study published in the journal JAMA Network Open showed that the group on a low-calorie diet had a greater drop in HbA1c, they lost more weight and also had lower fasting blood glucose as compared with the other group. The HbA1c drop in the low-calorie group was 0.23 per cent more than the other group.The study's findings signalled hope for people who were prediabetic and at a higher risk of onset of Type 2 Diabetes and other comorbidities. This study highlighted that consuming a healthy diet could help lower blood glucose levels thereby lowering risk of Type 2 Diabetes, heart attacks or strokes.