The Integrated Child Development Services (ICDS) program is India's largest public health program for children under 6 years old and pregnant/nursing women. It aims to improve nutritional and health status through Anganwadi centers that provide nutrition, immunizations, health checkups, and preschool education. Over 34 million children and 7 million women are served by nearly 1.4 million centers run by Anganwadi workers. The program faces challenges with quality of care, capacity of workers, and community involvement.