According to the World Health Organization, how long should infants be exclusively breastfed?

The World Health Organization recommends that infants be exclusively breastfed for the first six months of life. This guideline emphasizes the importance of providing only breast milk during this critical period, as it contains all the necessary nutrients and antibodies that are essential for an infant's optimal growth and development. Exclusive breastfeeding helps in establishing a strong immune system and reduces the risk of infections and chronic conditions later in life.

Breast milk also supports the infant's digestive system as it matures and provides the appropriate balance of fats, proteins, and carbohydrates crucial for their early development. After six months, complementary foods can be introduced alongside continued breastfeeding, which is encouraged for up to two years or beyond, tailoring the introduction of solid foods to the needs and readiness of the child.

The other timelines mentioned in the other options do not align with these established recommendations, highlighting the importance of the six-month exclusive breastfeeding guideline as a foundation of infant health.