Fat composition of vegetable oil spreads and margarines in the USA in 2013: a national marketplace analysis.

Worldwide, the fat composition of spreads and margarines ("spreads") has significantly changed over the past decades. Data on fat composition of US spreads are limited and outdated. This paper compares the fat composition of spreads sold in 2013 to that sold in 2002 in the USA. The fat composition of 37 spreads representing >80% of the US market sales volume was determined by standard analytical methods. Sales volume weighted averages were calculated. In 2013, a 14 g serving of spread contained on average 7.1 g fat and 0.2 g trans-fatty acids and provided 22% and 15% of the daily amounts recommended for male adults in North America of omega-3 α-linolenic acid and omega-6 linoleic acid, respectively. Our analysis of the ingredient list on the food label showed that 86% of spreads did not contain partially hydrogenated vegetable oils (PHVO) in 2013. From 2002 to 2013, based on a 14 g serving, total fat and trans-fatty acid content of spreads decreased on average by 2.2 g and 1.5 g, respectively. In the same period, the overall fat composition improved as reflected by a decrease of solid fat (from 39% to 30% of total-fatty acids), and an increase of unsaturated fat (from 61% to 70% of total-fatty acids). The majority of US spreads no longer contains PHVO and can contribute to meeting dietary recommendations by providing unsaturated fat.

Academic freedom or political maneuvers: Theodore W. Schultz and the oleomargarine controversy revisited.

The oleomargarine controversy was a case of academic freedom in which nineteen researchers resigned from Iowa State College to protest pressure from the dairy industry to change their research findings. This article explores the ways in which the boundaries between science and politics were more blurred than they seemed at the time or in subsequent historical treatments. The argument begins with a history of the unique composition of agricultural economics research at Iowa State, refocuses the affair from a conflict between the state college and the dairy industry to one among a much larger number of actors, and concludes by demonstrating that one professor, Theodore Schultz, was in the process of transitioning to a new career in prescriptive policy work with private policy associations that ended up being opposed to the practices and policy goals of some of the farm organizations in question.