Championing better #nutrition for women and children and changing the future, all in a 1,000 days work. An initiative of @FHI360. #First1000Days Championing better nutrition for women, children & families in the 1,000-day window. 1,000 Days is the leading organization working to improve nutrition for mothers and children in the U.S. and around the world during the critical 1,000-day window from pregnancy through a child’s 2nd birthday. Our work is guided by the science that shows that nutrition early in life sets the foundation for a child’s development and life-long health and by the conviction that every child—regardless of where they are born—deserves the best start to life and the opportunity to reach their full potential.