More than 7,500 children under five die from malnutrition every day, according to a recent World Vision report. Poor nutrition makes them vulnerable to diseases like diarrhoea and pneumonia, and hinders brain development and physical growth. This year, more than 30,000 students from 100 kindergartens, primary and secondary schools pledged to care for the malnourished as part of the World Vision Hong Kong Change the World, Yes I Can! campaign with the theme: Mission Nutrition. On October 12, students from Cho Yiu Catholic Kindergarten and Primary School compared their health status with that of children in developing countries. Hong Kong students aged four have an average mid-upper arm circumference between 15cm and 16cm, while malnourished developing world children under five often have measurements as small as 9cm to 11cm - the size of a HK$5 coin. 'I have learned that malnutrition seriously affects children's health,' said Tang Yu-kin, a Primary Six student. 'I will invite my relatives to sponsor a child with me so we can help him or her grow healthy.' To sign up for the campaign, visit www.worldvision . org.hk/learn/nutrition