Hormonal

Adopting a low glycemic index (GI) diet does not improve cardiovascular risk factors or insulin sensitivity compared to a high GI diet when total carbohydrate intake is high and other nutrients are controlled.

If you eat a high-carbohydrate diet, switching to 'low glycemic index' foods (like swapping white bread for whole wheat or pasta for lentils) will not necessarily improve your insulin sensitivity or heart health markers. In fact, this study suggests it might slightly worsen insulin sensitivity and raise LDL cholesterol compared to high GI carbs, provided your total calories, fiber, and saturated fat remain constant. Focus on reducing total carbohydrate quantity if you want to improve triglycerides and insulin sensitivity, rather than just swapping carb types.