Why The World Must Shift To Plant-Based Diets: A Doctor Explains

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Maybe you already believe in the idea that “you are what you eat.” Now, a powerful new study takes that a step further, suggesting that the health of our planet is also what we eat.

In this new study, scientists calculated that eating more plant-based foods—and less meat—could reduce food-related greenhouse gas emissions 29 to 70 percent by the year 2050, as well as reduce mortality around the world between 6 and 10 percent. That translates to millions of lives and billions of dollars saved.

“Dietary change could have large health and environmental benefits,” Marco Springmann, the lead author of the study and a sustainability researcher at Oxford University, told the Washington Post.

Scientists used health and emissions models to predict the impact of dietary changes. By projecting what would happen to the health of the world and its citizens by eating more servings of fruit and vegetables, along with reducing the consumption of animal products, the scientists highlighted the profound global impact of a plant-based plate.

A plant-based diet will not only help us live longer but will also reduce the changes that are damaging our planet.

The Oxford study examined four different dietary scenarios out to the year 2050. One was a “business as usual" global diet. The second approach analyzed a healthier diet in which people, on average, consumed adequate calories based on a minimum of five portions of fruit and vegetables, less sugar, and just half a portion of red meat per day. The third and fourth patterns the scientists looked at were stronger dietary shifts toward vegetarianism, and finally full veganism.

The results: if everyone followed the dietary recommendations in the second approach, food-related emissions would be reduced by 29 percent. If vegetarian diets were adopted, they'd be cut by as much as 63 percent. And as for full veganism? Global emissions would be slashed by a stunning 70 percent.

Plus, the researchers estimated that dietary changes could lead to savings of $700 billion to $1 trillion per year on health care, unpaid care, and lost working days, while the economic benefit of reduced greenhouse gas emissions could be as much as $570 billion. The study also suggests that three-quarters of all benefits would occur in developing countries, although the per capita effects of dietary change would be greatest in developed nations, due to higher rates of meat consumption and obesity. “In terms of health care benefits, because the health expenditure is so large in the U.S., we find that the pure health care savings that would be associated with dietary shifts would be the largest actually of all countries,” Springmann said.

So what does this mean for you? Springmann went on to tell Reuters, “we do not expect everybody to become vegan." But he does believe that more are moving in a plant-based direction. “We already see a plateauing of meat consumption in higher income countries, like Europe,” he told the Washington Post.

And as this study shows, even small changes toward a more plant-based diet will not only help us live longer but will also reduce the changes that are damaging our planet.

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Joel Kahn, M.D.

Cardiologist & Best-Selling Author
Dr. Kahn is the founder of the Kahn Center for Cardiac Longevity. He is a summa cum laude graduate of the University of Michigan School of Medicine and is a professor of medicine at Wayne State University School of Medicine. He is owner of GreenSpace Cafe in Ferndale, Michigan. His books, The Whole Heart Solution, Dead Execs Don't Get Bonuses, and Vegan Sex, all No. 1 best-sellers, are available for sale now. His public TV special, The Whole Heart Solution, is playing nationally now.
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Joel Kahn, M.D.

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