What Really Matters With Cholesterol: A Dietitian Explains

Cholesterol in animal-based foods once received a negative reputation for heart health. However, current science indicates that dietary cholesterol can be incorporated into a healthy diet for many individuals, particularly if saturated fat consumption is limited. Shannon Stockero, a registered dietitian, discussed the most prevalent misconceptions and effective dietary adjustments for managing cholesterol.

A common misconception is that foods with high cholesterol automatically elevate blood cholesterol levels. While dietary cholesterol can influence cholesterol levels in some individuals, its impact is generally smaller than assumed. The body naturally produces cholesterol, which is crucial for cell structure, hormone production, and digestion.

Factors like saturated fat intake, dietary patterns, exercise, genetics, and lifestyle habits have a more significant impact on blood cholesterol levels than cholesterol-laden foods alone. To reduce cholesterol, replacing saturated fats with unsaturated fats is the most impactful dietary change. Saturated fats are commonly found in fatty cuts of meat, butter, and full-fat dairy products, while unsaturated fats are present in olive oil, avocados, nuts, seeds, and fatty fish.

Increasing fiber intake, particularly soluble fiber from foods like oats, beans, lentils, apples, and barley, can also effectively lower LDL cholesterol. It is a misconception that all fat is detrimental. Healthy fats are essential for nutrient absorption, satiety, and overall heart health, so the goal is to choose the right types of fat.

Saturated fats typically increase LDL cholesterol levels, while trans fats have a more detrimental effect as they raise LDL cholesterol and lower HDL ("good") cholesterol. Unsaturated fats, including monounsaturated and polyunsaturated fats, can improve cholesterol levels when they replace saturated fats in the diet.