Macro partitioning

Replacing saturated fats with polyunsaturated fats reduces cardiovascular disease risk, whereas replacing saturated fats with refined carbohydrates increases myocardial infarction risk.

To protect your heart, focus on what you swap out. If you reduce saturated fats (like butter or fatty meats), replace them with unsaturated fats (like olive oil, nuts, or fish), not refined carbs (like white bread or sugar). Swapping fat for refined carbs may actually increase your risk of heart attack.