Macronutrient

Definition

Macronutrients are nutrients that provide the body with energy and are needed in large amounts for growth, metabolism, and other bodily functions. The three primary macronutrients are carbohydrates, proteins, and fats.

Scientific / Technical Definition

Macronutrients are chemical substances required in relatively large amounts by organisms to sustain life. They include carbohydrates, proteins, and lipids (fats), each providing varying amounts of energy and playing distinct roles in cellular functions, structural maintenance, and physiological processes.

Benefits

• Provide energy for daily activities and cellular functions.
• Support growth and development.
• Aid in the maintenance and repair of tissues.
• Help in the regulation of metabolic processes.

Examples

• Carbohydrates: Bread, rice, pasta, fruits.
• Proteins: Meat, fish, eggs, legumes.
• Fats: Olive oil, avocados, nuts, butter.

Additional Information

• Importance: Macronutrients are crucial for the body's energy balance and are foundational to a balanced diet. Each type provides specific benefits and roles in maintaining a healthy, functioning body.

Related Terms

• Carbohydrate
• Protein
• Fat
• Calories
• Nutrient

References

• The Role of Macronutrients in Human Nutrition
• Understanding Macronutrients
• Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids