Nina Teicholz

In 2017, Salim Yusuf stated that Teicholz "shook up the nutrition world but she got it right", a statement for which he was criticized.

In February 2015, the US Dietary Guidelines Advisory Committee (DGAC) released its report, written to provide a foundation for the 2015 Dietary Guidelines for Americans, and The New York Times published an op-ed by Teicholz criticizing the committee and its work. The Arnold Foundation funded further work by Teicholz on the DGAC report, which was published in the British Medical Journal in September 2015. In that article, Teicholz continued the themes of her book and her February op-ed, and wrote that the DGAC showed bias against fat and meat and did not use all the available evidence, and that members had undisclosed conflicts of interest. The BMJ circulated a preprint of the article with a press release, and Teicholz' claims were widely covered in the media.

The DGAC, the US Department of Health and Human Services, the Center for Science in the Public Interest, and others, including a petition signed by 180 scientists harshly criticized Teicholz' claims, and they called for the BMJ to retract the article or issue corrections. The BMJ issued a correction in October 2015 and another in December 2016, the latter with a statement that after an independent review of the paper, it had decided not to retract it.

Meanwhile, the Arnold Foundation had been pressing for Congressional hearings about the DGAC report and attempted to block the release of the 2015 Dietary Guidelines for Americans; its lobbying group arranged meetings for Teicholz with members of Congress and White House staff. Teicholz and the Foundation were criticized at the time for being allies of the meat and dairy industries in their lobbying and other public relations efforts to maintain high levels of meat and dairy consumption by US consumers.

Teicholz authored an opinion piece with similar themes in The Wall Street Journal in October 2014 that caught the attention of hedge fund founder John Arnold, who recruited her to join the efforts funded through his Laura and John Arnold Foundation to fight obesity, namely through the Nutrition Science Initiative, which does research, the Action Now Initiative, a lobbying group, and the Nutrition Coalition, which is aimed at improving dietary guidelines.

She said that she became interested in dietary fats while doing a series of stories investigating food for Gourmet, and was assigned a story on trans fat that was published in 2004. For many years prior to this initial assignment on trans fats she had been a vegetarian. Her 2014 book, The Big Fat Surprise: Why Butter, Meat and Cheese Belong in a Healthy Diet, traced the history of US diet guidelines; in the book she discussed the science behind the guidelines and the influence of industry lobbying on them, and also questioned the emphasis on avoiding saturated fat. She advised readers to "eat butter; drink milk whole, and feed it to the whole family. Stock up on creamy cheeses, offal, and sausage, and yes, bacon". The book made The New York Times Best Seller list that year, and was named one of the Top 10 Non-Fiction Books of 2014 by The Wall Street Journal and one of the year's best science books by The Economist. The book was criticized by nutritionists including Marion Nestle.

Nina Teicholz (born May 7, 1965) is a journalist who advocates easing restrictions on naturally-occurring fats, including so-called "saturated" (i.e., stable) fats, in the American diet.