: Essential for hemoglobin synthesis and oxygen transport.
: Severe energy deficiency leading to a "skin and bones" appearance, muscle wasting, and loss of subcutaneous fat.
Nutrition is a fundamental pillar of health and human development. The relationship is often described by the concept of the
: Triglycerides (fats and oils), phospholipids (e.g., lecithin), and sterols (e.g., cholesterol). Fatty Acids :
┌────────────────────────┐ │ Macronutrients │ └───────────┬────────────┘ ┌────────────────────┼────────────────────┐ ▼ ▼ ▼ ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │ Carbohydrates │ │ Lipids │ │ Proteins │ │ (4 kcal/g) │ │ (9 kcal/g) │ │ (4 kcal/g) │ └─────────────────┘ └─────────────────┘ └─────────────────┘ Carbohydrates
: Energy provision (4 kcal/g), protein-sparing action, prevention of ketosis, and structural components of cell membranes.