Macronutrients Guide

Macronutrients are the three categories of nutrients that provide energy: carbohydrates, proteins, and fats. Understanding and balancing them is the foundation of heart-healthy eating.

What Are Macronutrients?

Every food you eat contains some combination of the three macronutrients:

Macronutrient	Calories per gram	Primary Function
Carbohydrates	4 kcal/g	Primary energy source
Protein	4 kcal/g	Tissue repair, immune function
Fat	9 kcal/g	Hormones, brain health, fat-soluble vitamins

Carbohydrates

Carbohydrates are your body's preferred fuel. The type matters more than the amount.

Heart-Healthy Carbohydrates

• Whole grains: oats, brown rice, quinoa, barley
• Legumes: lentils, chickpeas, black beans
• Vegetables: all non-starchy vegetables
• Fruits: berries, apples, citrus (rich in fiber and antioxidants)

Carbohydrates to Limit

• White bread, white rice, refined pasta
• Sugary beverages (soda, juice, sports drinks)
• Pastries, cookies, cakes
• Breakfast cereals with added sugar

Fiber target: 25–35g daily. Soluble fiber (oats, beans, apples) specifically reduces LDL cholesterol.

Proteins

Protein is essential for maintaining muscle mass, immune health, and satiety.

Heart-Healthy Protein Sources

• Fish: salmon, sardines, mackerel (rich in omega-3s)
• Legumes: lentils, beans (also provide fiber)
• Poultry: skinless chicken and turkey
• Low-fat dairy: Greek yogurt, cottage cheese
• Eggs: whole eggs in moderation (4–6/week)
• Plant proteins: tofu, tempeh, edamame

Proteins to Limit

• Processed meats: bacon, sausage, hot dogs, deli meat (high in sodium and saturated fat)
• Red meat: limit to 1–2 servings per week maximum

Fats

Fat has been unfairly demonized. The type of fat is what matters for heart health.

Healthy Fats (Increase These)

• Monounsaturated: olive oil, avocados, almonds, cashews
• Polyunsaturated (omega-3): fatty fish, walnuts, flaxseeds, chia seeds
• Polyunsaturated (omega-6): sunflower oil, corn oil (in moderation)

Fats to Limit or Avoid

Fat Type	Effect on Heart	Sources to Limit
Saturated fat	Raises LDL cholesterol	Butter, full-fat dairy, red meat, coconut oil
Trans fat (artificial)	Raises LDL AND lowers HDL	Partially hydrogenated oils, margarine sticks

Trans fat is the worst dietary fat for heart health. Check labels for "partially hydrogenated oil."

Balancing Your Plate

A simple visual guide — the "Healthy Plate":

• ½ plate: non-starchy vegetables
• ¼ plate: lean protein
• ¼ plate: whole grains or starchy vegetables
• Side: small portion of healthy fat (avocado, olive oil drizzle, handful of nuts)

Sample Day of Eating

Meal	Example	Notes
Breakfast	Oatmeal with berries and walnuts	High in soluble fiber and omega-3
Lunch	Grilled salmon salad with olive oil	Omega-3s, healthy fats
Snack	Apple with almond butter	Fiber + healthy fat
Dinner	Lentil soup with whole grain bread	Plant protein, fiber