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Achieving food security, improving nutrition and promoting sustainable agriculture are key to reaching one of the United Nations' most critical Sustainable Development Goals: .

The goal is important for all people, but is crucial for children. There is work to do to meet this goal not just in low- and middle-income countries, but also in high-income countries. In and the , .

Children rely on adults to nourish their growth and in an increasingly —all of which threaten the global food supply, food affordability and the equitable distribution of food.

In my book , I examine the challenges of feeding and nourishing children.

Feeding children is a collective responsibility

As a species, humans are "." For much of our evolutionary history, nurturing children has fallen on parents, grandparents, older siblings and extended relations.

Today that responsibility also extends to institutions such as daycares, schools and governments. It's a responsibility that regrettably we have not adopted as our highest collective priority.

In the past three decades, the world has made considerable progress in reducing child malnutrition.

In Nepal, where I conducted children's nutrition research in the 1990s, an alarming , a term used to describe kids who are short for their age due to chronic malnutrition.

From 2001 to 2011 the prevalence of stunting in Nepal declined to 41% from 57%—the most rapid improvement ever documented.

of this reduction in Nepal isolated five factors:

• improvements in maternal nutrition, increasing average birth weights
• rapid growth in household income
• educational improvements, especially in maternal education
• increased access to health care, particularly prenatal, neonatal and postnatal
• sizeable improvements in sanitation

These improvements were brought about by broad social, economic and policy changes at both community and national levels, featuring the combined efforts of many partners.

Still, the world has a long way to go to achieve zero hunger by 2030, in keeping with the Sustainable Development Goals.

, 22% of all children in the world under the age of five were stunted, 6.7% suffered from wasting (being too thin for their height due to acute malnutrition) and 5.7% were overweight.

Stunting and wasting are mostly low-income country phenomena, but even children being overweight—often assumed to occur only in high-income countries—is now common in middle- and low-income populations. The so-called ""—being both undernourished and overweight—occurs in tandem with stunting and wasting within an individual, household or population.

For example, an individual with obesity may also have nutritional deficiencies due to a poor diet. At the household level, one member may be living with obesity while another has a nutrient deficiency such as anemia. On a larger scale, this double burden can affect neighbourboods, cities and regions.

Child food insecurity in Canada and the United States

Child malnutrition is no stranger to high-income countries. In and the , food insecurity is more prevalent in households with children under 18, affecting about 17% in this age group.

In Canada, food-insecure households with children are more likely to be headed by .

While the U.S. has a range of federally funded programs to address child hunger, such as the and the , Canada has no government-funded programs dedicated to supporting children's nutrition. It is the only nation in the .

Instead, Canada has a range of charitable efforts such as school breakfast programs and food banks staffed by volunteers.

What's especially concerning in Canada is the lack of action at all levels of government to address the problem of food insecurity for children that is prevalent—and growing. In a on youth well-being in 41 high-income nations, Canada was ranked 37 in working toward the Zero Hunger goal for children. Canada ranked ahead of only Malta, Turkey, Mexico and Bulgaria, with the U.S. ranked just above Canada at 36.

What can we do to end child hunger and malnutrition?

Reducing child poverty is critical.

Unfortunately, .

In Canada, cash transfers to families such as the have helped to reduce poverty, but are not enough. programs would go far toward reducing the most severe food insecurity among those at the lowest income levels.

In 2019, Prime Minister Justin Trudeau's federal Liberal government announced its long-awaited that included, among other promises, a federal commitment to work with the provinces and territories to develop a national school food program to deliver healthy food to children before and during school.

Sadly, COVID-19 has stalled the implementation of that policy, while rising inflation has , which only heightened the crisis in children's food security and malnutrition.

A recent is emblematic of the necessity for government intervention to ensure that goods vital to children's survival are not under the complete control of the food industry.

Now more than ever, food policies targeting children are needed from all branches of government.

This article is republished from under a Creative Commons license. Read the .