In the face of worsening conflict, climate change, rising cost of living, and COVID-19 aftershocks, scaling up wasting prevention, detection, and treatment services will make a marked difference in child survival and well-being. Undernutrition accounts for about 45% of deaths among children under five. The most deadly form of undernutrition, wasting (dangerously low weight for height), impacts over 45 million children around the world daily and kills over 1 million children per year.