Malnutrition is a major health problem for infants and young children worldwide. Inadequate nutrition during the first two years of life can negatively impact growth, health, and development. The document discusses the importance of breastfeeding and complementary feeding. Exclusive breastfeeding for the first six months meets infant nutritional needs and protects against illness. After six months, other foods should be introduced along with continued breastfeeding to two years or beyond. Improper complementary feeding can impair growth. The study aims to examine awareness of breastfeeding and complementary feeding practices in urban and rural Bangladeshi communities and how malnutrition impacts infection rates in children.