Kiera Butler

Kiera Butler

Senior Editor

A senior editor at Mother Jones, Kiera covers health, food, and the environment. She is the author of the new book Raise: What 4-H Teaches 7 Million Kids—and How Its Lessons Could Change Food and Farming Forever (University of California Press).


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Last year, I attended the annual conference of the California Dietetic Association, the state's chapter of the country's largest professional organization for nutritionists and dietitians. Its premier sponsor—and lunch caterer—was McDonald's. That won't be the case at this year's conference in April: The organization just voted not to invite the fast-food chain back.

Today a member of the California Dietetics Association shared the following letter from conference leadership on the Facebook page of Dietitians for Professional Integrity:

We would like to direct your attention to what the California Dietetic Association (CDA) has done to address our own issues surrounding sponsorship. We heard your concerns regarding CDA Annual Conference sponsorship and we have listened. We voted and McDonalds was not invited as a sponsor in 2015. This decision has impacted our finances; however, we believe it was important to respond to our member feedback. In addition, an ad hoc committee approved by the CDA executive board, reevaluated the sponsorship guidelines. The new sponsorship policy will be posted soon on Any questions regarding the new policy can be directed to Kathryn Sucher, CDA President-elect [email address redacted]
We look forward to seeing you at the CDA Annual Conference.
Your 2014-2015 CDA Executive Board

That's not to say that the conference organizers have ditched corporate funders entirely. According to the schedule (PDF), Kellogg's is sponsoring a panel called "The Evolution of Breakfast: Nutrition and Health Concerns in the Future," while Soy Connection, the communications arm of the United Soybean Board, is hosting a session titled "Busting the Myths Surrounding Genetically Engineered Foods" (and sponsoring a "light breakfast"). A few other sessions sponsored by corporations and trade groups:

  • "Why We Eat What We Eat in America and What We Can Do About It" (California Beef Council)
  • "Probiotics and the Microbiome: Key to Health and Disease Prevention" (Dairy Council of California)
  • "New Research – Understanding Optimal Levels Of Protein And Carb To Prevent Obesity, Sarcopenia, Type 2 Diabetes, And Metabolic Syndrome" (Egg Nutrition Center)
  • "New evidence of Non-Nutritive Sweeteners: Help or Hindrance for Weight and Diabetes Management" (Johnson & Johnson McNeil, Inc, LLC)
  • "Plant-based Meals from Around the Globe" (Barilla Pasta)

Still, says Andy Bellatti, a dietitian and leader of the group Dietitians for Professional Integrity, ditching McDonald's as a sponsor is a step in the right direction. "There's still a long way to go," he said. "But the McDonald's sponsorship was just so egregious. I'm glad they came to their senses and got rid of it."

Antibiotics Are No Longer Making Pigs Bigger

For decades, it's been thought that low, regular doses of antibiotics help livestock grow big—thus increasing meat producers' profits. So common is the practice of lacing farm animals' feed with the drugs that an astonishing four-fifths of all antibiotics in the United States now go to livestock.

But a new meta-analysis by two Princeton researchers shows that antibiotics aren't as effective at promoting growth as they used to be. Studies from 1950-1985 suggested that antibiotics increased weight of young pigs by an average of about 17 older pigs by 4 percent. But similar studies since 2000 found much less dramatic results: 1 percent increase for young pigs and no measurable increase for older pigs.

No one knows why the drugs have become less effective—and in fact, there's no consensus on how exactly antibiotics increased growth in animals to begin with. One theory is that the drugs fight low-level infections, which allows the animal to use its energy for growing instead of warding off germs. The authors of the new analysis theorize that as hygiene at livestock operations improve, the rate of infections might be decreasing, thus negating the need for antibiotics.

Another (scarier) possibility: Bugs that cause common animal infections are becoming resistant to the antibiotics. The consequences of antibiotic resistance, of course, go far beyond pigs' rates of growth. As my colleague Tom Philpott has reported, superbugs can jump from animals to humans. Antibiotic-resistant infections already kill 700,000 people every year worldwide. A recent UK report predicted that number will rise to 10 million by 2050.

"If the benefits of [antibiotics for animal growth] have diminished, then it becomes reasonable to be cautious and avoid the potential public health costs," write the new report's authors. "Antibiotics are not needed to promote growth, but they are essential to treat infectious diseases and maintain animal health." 

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