The Philippine government should further invest in more programs that tackle childhood undernutrition as 30 percent of children under five years of age are stunted, a study released by the World Bank said.

The 'Undernutrition in the Philippines: Scale, Scope and Opportunities for Nutrition Policy and Programming' study released on Tuesday said childhood stunting, which is characterized by prolonged nutritional deficiency among infants and young children is one of the most serious, but least-addressed problems in the world and an even more pressing issue in the Philippines.