The United Nations has identified some of the nations most affected by the extraordinary food and nutrition crisis.
According to the agencies, violence, climatic shocks, COVID-19, and growing living costs are leaving an increasing proportion of children critically malnourished.
"This is happening at a time when critical health nutrition and other life-saving services are becoming more difficult to obtain.
"Currently, more than 30 million children in the 15 worst-affected nations suffer from wasting or acute malnutrition and eight million of these children are severely wasted, the deadliest type of undernutrition.
"This is a severe danger to children's lives and long-term health and development, with consequences felt by people, communities, and countries," it stated.
According to the report, the five UN organisations are the Food and Agriculture Organization (FAO), the United Nations Refugee Agency (UNHCR), the United Nations Children's Fund (UNICEF), the World Food Programme (WFP), and the World Health Organization (WHO).
They asked for faster action on the Global Action Plan on Child Wasting, according to the statement.
"This is meant to prevent, identify and treat acute malnutrition among children in the worst-affected nations, which include Afghanistan, Burkina Faso, Chad and Democratic Republic of the Congo.
Ethiopia, Haiti, Kenya, Madagascar, Mali, Niger, Nigeria, Somalia, South Sudan, Sudan, and Yemen are among the others.
It stated that the Global Action Plan recognised the need for a multi-sectoral approach and identified priority initiatives across the food, health, water and sanitation, and social protection systems for maternal and child nutrition.
In response to rising demands, the UN agencies selected five priority activities that will be successful in tackling acute malnutrition in countries afflicted by conflict and natural disasters, as well as in humanitarian catastrophes, according to the statement.
Scaling up these activities as a coordinated package will be important for preventing and treating acute malnutrition in children, as well as averting a terrible loss of life, according to the report.
"The UN agencies appeal for bold and early action to avoid this crisis from becoming a tragedy for the world's most vulnerable children.
"All agencies call for more funding in support of a coordinated UN response that will meet the enormous requirements of this rising catastrophe before it's too late," the statement added.
"Mr QU Dongyu, Director-General of the FAO, indicated that the situation is projected to worsen much further in 2023.
"We must assure availability, affordability and accessibility of good foods for young children, females, and pregnant and nursing women.
"We need immediate action to save lives and address the core causes of acute malnutrition by collaborating across all sectors," Qu added.
According to Filippo Grandi of the United Nations High Commissioner for Refugees (UNHCR), the UN system is reacting to the issue as a whole.
The UN Global Action Plan on Child Wasting is our global collaborative effort to prevent, identify, and cure wasting, he stated.
Mr Grandi stated that UNHCR is working hard to enhance analysis and targeting in order to reach the most vulnerable children, including internally displaced and refugee communities.
According to Catherine Russell of the United Nations Children's Fund (UNICEF), cascading crises are wasting millions of children and making it difficult for them to get critical services.
According to Ms Russell, casting is unpleasant for the kid and, in severe situations, can result in death or irreversible harm to the child's growth and development.
She believes that proven strategies to prevent, identify, and treat child wasting can and must be used to turn around the nutrition problem.
According to David Beasley of the World Food Programme (WFP), more than 30 million children are critically malnourished among the 15 worst-affected nations, therefore they must act quickly and together.
According to Beasley, it is vital that they work together to develop social safety nets and food assistance in order to ensure that Specialized Nutritious Foods are available to women and children who need them the most.
The World Health Organization's (WHO) Tedros Ghebreyesus stated that the global food crisis is also a health catastrophe, and that "malnutrition leads to illness, and sickness leads to malnutrition."
He also stated that immediate assistance is required in the most affected nations to defend children's lives and health, including guaranteeing crucial access to appropriate meals and nutrition services, particularly for mothers and children.
