Tackling Food Insecurity and Climate Change in Tandem
Ag Practices Drive Climate Change as Population Rises. What Would Sustainability Look Like?

5 takeaways:

The pandemic has altered food supply chains, decimated the restaurant industry and heightened food insecurity. Laura Reiley, who covers the business of food for The Washington Post, has focused on the 50 million Americans who are food insecure. Many are experiencing food insecurity for the first time in their lives while suffering shame about their circumstances. Learning how to talk with them is vital.

Obesity and food insecurity are twin problems in the United States and the world. In the U.S., “It’s not so much lack of calories, it’s lack of nutrition,” Reiley said. Globally, 2 billion people lack micronutrients like iron and vitamin A, 155 million children are stunted and 2 billion are obese, said Dr. Walter C. Willett, a Harvard professor of epidemiology, nutrition and medicine.

If the goal is to provide food to all, meat is an inefficient way to do so. Willett noted that animals take calories that could best be consumed by humans. “We feed the very large majority of our grains to animals,” Willett said. “And if we could do one thing, it would be stop feeding grain to animals and eat the grains ourselves in a non-refined way that would make massive improvements in health and environment at the same time.”

The food system is a major contributor to greenhouse gasses and climate change – but change is possible. “We are on a path leading to ecological disasters and a sick and unstable global population,” Willett said. But, he said, “Feeding 10 billion people a healthy and sustainable diet is possible.” A shift to more plant-based protein sources would have a big effect on greenhouse gasses. Replacing one serving of red meat per day with plant proteins has been linked to sharply reduced risk of stroke, heart disease and overall mortality. Making the right moves now could allow food-production greenhouse gasses to stay within the limits necessary to help mitigate climate change.

A healthy diet can be traditional. Willett shared the latest science – based on thousands of students, dozens of meta-analyses – on what constitutes an optimum diet. “It turns out that this is very similar to what Greek men were eating in the 1960s, when at that time they had the healthiest life expectancy in the world,” he said. (See this New York Times piece on the Mediterranean diet, citing Willett.)

 

This program was funded by Bayer. The Association of Foreign Press Correspondents in the United States and NPF are solely responsible for the content.

Dr. Walter Willett
Professor of Epidemiology and Nutrition, Harvard T.H. Chan School of Public Health; Professor of Medicine, Harvard Medical School
Laura Reiley
Business of Food Reporter, The Washington Post
Daniel Schrag
Sturgis Hooper Professor of Geology, Harvard University; Director, Harvard University Center for the Environment
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