How can malnutrition, chronic illness, and repeated infections affect a child's growth?

Malnutrition, chronic illness, and repeated infections significantly disrupt a child's development, often leading to growth retardation or total growth failure.12

• Malnutrition: Inadequate intake of essential proteins and calories, such as in marasmus, causes progressive wasting of muscle and fat and stunts physical growth. Nutritional deficiencies, including a lack of necessary vitamins or minerals, can lead to malformation, disease, and impaired development. Severe, prolonged malnutrition may result in permanent growth impairment and intellectual disability.13
• Chronic Illness and Infection: Serious diseases in children frequently result in growth failure. Infections can cause localized growth disturbances; for example, osteomyelitis (a bone infection) can halt growth at the site of infection, leading to skeletal asymmetry. Furthermore, chronic conditions may force the body to adapt in ways that distort physical structure, such as cardiac disease causing chest distortion.2

These factors interfere with the body's natural growth processes, which are otherwise governed by the endocrine system and growth hormone secretion.4