Dietary Management of Lipid Profiles

Introduction to Dietary Influences

• Saturated fat is the principal dietary determinant of plasma LDL cholesterol, and individuals with diabetes appear to be more sensitive to dietary cholesterol than the general public, according to the American Diabetes Association guidelines 1
• There is a positive correlation between dietary total and saturated fat intake and changes in plasma total cholesterol and LDL cholesterol 2

Dietary Recommendations

• The American Diabetes Association recommends limiting saturated fat to less than 7% of total calories, especially for individuals with LDL cholesterol >100 mg/dl 2
• Restricting dietary cholesterol to less than 300 mg/day, or 200 mg/day for those with elevated LDL cholesterol is recommended 2
• Replacing saturated fats with either carbohydrates or monounsaturated fats can help lower LDL cholesterol 2

• The Therapeutic Lifestyle Changes (TLC) diet, recommended by the American Family Physician, has key features including:

  Component	Recommendation
  Total fat	25-35% of daily calories
  Saturated fat	less than 7% of daily calories
  Cholesterol	less than 200 mg/day

  3

• Increasing soluble fiber intake to 10-25 g/day can help lower LDL cholesterol, as recommended by the American Heart Association 4, 2, 5
• Adding plant stanols/sterols (2 g/day) can also help lower LDL cholesterol, as recommended by the American Heart Association 4, 2

Lifestyle Considerations

• Exercise can mitigate some negative effects of dietary fat on lipid profiles, according to the American Diabetes Association guidelines 1
• A healthy diet and lifestyle are crucial for managing cholesterol levels, as recommended by the American Heart Association and the American College of Cardiology 6, 7, 8
• Achieving a healthy body weight through balanced calorie intake and physical activity can help manage LDL cholesterol levels, as recommended by the American College of Cardiology 8, 9, 7, 10, 11
• Regular physical activity, including resistance training and aerobic exercise, can significantly improve triglyceride levels, and combining dietary changes with regular physical activity provides the most significant improvements in triglyceride levels 12, 5, 4
• Increasing physical activity to at least 30 minutes of moderate-intensity activity most days can help manage LDL cholesterol levels, as recommended by the American College of Cardiology 8, 9, 7, 10, 11

Specific Dietary Patterns and Foods

• The Mediterranean diet and traditional Japanese diet are the most effective dietary patterns for lowering cholesterol and saturated fat intake, with both associated with the best life expectancy in the world 6
• The Mediterranean diet is characterized by high intake of vegetables, fruits, whole grains, beans, nuts, and seeds, with olive oil as the principal source of dietary lipids, low to moderate amounts of dairy products, limited red meat consumption, and moderate wine consumption with meals 13, 14
• The traditional Japanese diet is high in complex carbohydrates, very low in saturated fat, rich in fish and seafood, abundant in vegetables, and minimal in processed foods and animal fats 6
• A daily serving size of 15-30g of nuts can reduce cardiovascular disease incidence, according to the American Heart Association 15
• Nuts are low in saturated fat and rich in unsaturated fats, which can contribute to cholesterol management 15
• Red meat and processed meats, full-fat dairy products, tropical oils, commercially prepared baked goods, and processed foods with partially hydrogenated oils (trans fats) should be limited or avoided 16, 14, 7, 17
• Foods high in saturated fats, such as full-fat dairy products, fatty meats, tropical oils, and poultry skin, can increase LDL cholesterol levels, according to the Academy of Nutrition and Dietetics 7
• Foods high in trans fats, such as commercially prepared baked goods and processed foods with partially hydrogenated oils, can increase LDL cholesterol and reduce HDL cholesterol, as reported by the American College of Cardiology 7, 17
• Specific foods that raise triglycerides include sugar-sweetened beverages, white bread, pasta, and rice, baked goods and desserts, processed snack foods, and foods with added sugars, as reported by the American College of Cardiology 17

Additional Recommendations

• Limiting sugar and refined carbohydrate intake, reducing alcohol consumption, and increasing omega-3 fatty acid intake are recommended to manage lipid levels, according to the American College of Cardiology 17, 7, 5
• Increasing omega-3 fatty acids through fatty fish consumption can be beneficial for heart health, although the specific impact on LDL cholesterol is not detailed 7, 5, 18
• Saturated and trans-fatty acids should be limited to less than 10% of total calories, according to the American Heart Association 6
• Dietary cholesterol intake should be limited to less than 300 mg/day, as recommended by the American College of Cardiology 6