A report released this week by a commission of experts from 16 countries emphasizes the health benefits of a plant-based diet, indicating it could significantly impact global health and the environment. Published in The Lancet, the report reveals that widespread adoption of a plant-centric diet could prevent over 10 million deaths annually, accounting for 20 percent of adult fatalities each year.
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Dr. Brent Loken, a conservation scientist and co-author of the report, stated that the research aimed to find the optimal diet for human health while considering the Earth's limits. The commission recommended a dietary pattern high in vegetables and whole grains, while being low in meat, fats, and oils. They provided specific guidelines based on a 2,500-calorie diet, the recommended intake for a sedentary to moderately active adult male.
The ideal diet includes approximately 600 grams of vegetables per day, equivalent to about 4 cups of broccoli, and 200 grams each of whole grains and cooked black beans—about 1 cup of dry brown rice and nearly 4 cups of beans, respectively. The study also noted that replacing a quarter-pound of ground beef with plant-based alternatives could provide an additional 5 cups of cooked lentils.
The commission took into account environmental factors such as greenhouse gas emissions, biodiversity loss, and resource use according to international guidelines, including the Paris Agreement. In the U.S., where 26.5 billion pounds of beef were consumed in 2017, studies indicate the hefty environmental toll of meat production; a single hamburger may require 14.6 gallons of water and contribute significantly to greenhouse gas emissions.
The report posits that adopting a whole-foods plant-based diet by 2050 could not only support individual health but also sustain the growing global population and protect the planet, stated Dr. Francesco Branca, co-author and director at the World Health Organization.
To successfully transition to this dietary shift, other measures are also necessary, including improvements in soil conservation, food waste reduction, and increased agricultural yields without expanding land use. The authors highlighted the lack of evidence for the necessity of red meat in human diets.
Dr. Neal Barnard, president of the Physicians Committee for Responsible Medicine, underscored that transitioning to a plant-based diet is beneficial both for health and the environment, as animal products contribute to major health issues and environmental degradation.
Individuals interested in adopting a plant-based diet can start gradually, for instance, by observing a meatless day each week. Resources like the free 21-Day Vegan Kickstart app are available to facilitate this transition. "With food, you have the absolute power to make an impact," Loken concluded.