New weight-for-age growth charts have been developed for the IMCI guidelines and are now available based on the new growth standards for infant and young children which were released by WHO in 2006. Those international, prescriptive standards, showing how a child should grow, have more recently been introduced in regional and country activities. Endorsed among others by the International Pediatric Association and the UN Standing Committee on Nutrition, they provide an effective tool for detecting both undernutrition and overweight / obesity, thus addressing the double burden of malnutrition. The updated IMCI growth charts include one set for boys and one for girls , if a country opts for sex-specific charts, and one combined for boys and girls developed for ease of use as in the previous generic IMCI growth chart. Click on the hyperlinks to view further information on the WHO child growth standards, the WHO Multicentre Growth Reference Study which has provided the data to generate the new growth charts, and the standards.