Eight-year-old Sitan was lying on a rattan mat outside her family's house shading herself from the baking midday sun. Years of malnutrition had left this eight-year-old looking more like a little girl of four. Worse, she could barely move and was virtually silent. She, like many millions of children across the developing world, has a condition called stunting. In layman's terms this means she didn't get enough nutritious food as young child and is now physically and possibly mentally less developed than she should be.