Atención a la salud y nutrición durante los primeros mil días.

The first thousand days, from conception to two years of age, are a critical period for the development and prevention of malnutrition in all its forms, and a window of opportunity for the implementation of interventions that ensure optimal development and improve human capital. This special article aims to present the main challenges for health and nutrition care in the first thousand days, the progress in the development and implementation of a strategy for this purpose, and to formulate priority recommendations for public policy for the next administration. [ABSTRACT FROM AUTHOR]