According to New Study Published in the Journal of the American Dietetic Association

Media Contacts: Ryan O’Malley, Allison MacMunn
800/877-1600, ext. 4769, 4802 media@eatright.org

Large disparities exist in obesity and other chronic diseases across racial/ethnic groups in the United States. Are racial differences in diet, exercise, and weight status related to better knowledge about healthy eating and awareness of food-related health risks? Or are they more closely related to differences in socioeconomic status (SES)? A new study published in the December issue of the Journal of the American Dietetic Association finds that people with a lower socioeconomic status are more likely to be overweight, regardless of racial/ethnic background, and that the level of nutritional knowledge and health awareness did not lead to significant racial differences in weight and diet.

“Our findings suggest that disparities in obesity in the United States may be more affected by the broader social environment,” said authors Youfa Wang, MD, PhD, MS, director of the Johns Hopkins Global Center for Childhood Obesity and associate professor of International Health and Epidemiology, and Xialoi Chen, MD, PhD, MPH, assistant scientist in the Department of International Health at Johns Hopkins Bloomberg School of Public Health, Baltimore, MD. “Poor quality retail food environments in disadvantaged neighborhoods, in conjunction with limited individual economic resources, contribute to increased risk of obesity within ethnic minorities and socioeconomically disadvantaged populations.”

The authors hypothesized that between-group differences in nutrition- and health-related psychosocial factors, including nutrition knowledge and beliefs, are important contributors to the large racial/ethnic and socioeconomic differences observed in U.S. adults’ dietary intakes, exercise and obesity. They analyzed nationally representative data collected from 4,356 individuals who had participated in the U.S. Department of Agriculture’s Continuing Survey of Individual Food Intakes, and who had completed the Diet and Health Knowledge Survey, which asks about self-perceptions of nutritional intake, awareness of the relationship between diet and health, perceived importance of following nutritional guidelines and other questions related to health and diet.

Each participant was asked 24 questions to evaluate nutrition and health-related psychosocial factors (NHRPF). SES was assessed using education and household income. The authors analyzed the relationship between NHRPF and SES with self-reported dietary intake, diet quality (measured by the U.S. Department of Agriculture’s Healthy Eating Index [HEI]), exercise participation, body mass index (BMI), and overweight or obesity. Changes in racial/ethnic differences in weight status were compared with diet and exercise participation.

In general, compared to non-Hispanic whites, non-Hispanic blacks had higher BMI and scored lower on the HEI, and were less likely to participate in exercise. Hispanics scored higher on the HEI. The racial and ethnic differences in diet and BMI changed little after controlling for NHRPF. But when SES was controlled for, the black–white differences in HEI became smaller and the white–Hispanic differences became greater.

“Our study shows several important findings that could help enhance the understanding of the complex factors that affect disparities in diet, exercise, and obesity across ethnic and SES groups,” commented Dr. Wang. “Different from what we expected, few of the racial/ethnic differences in diet, exercise, and weight status were explained by health- and nutrition-related psychosocial factors. But SES explained a considerable portion of the disparities.”

“The underlying causes of ethnic disparities in eating, exercise, and obesity in the United States are complicated. More well-designed studies with vigorous and comprehensive assessment of related factors are needed to help advance understanding.”

The article is “How Much of Racial/Ethnic Disparities in Dietary Intakes, Exercise, and Weight Status Can Be Explained by Nutrition- and Health-Related Psychosocial Factors and Socioeconomic Status among US Adults?” by Y. Wang and X. Chen. It appears in the Journal of the American Dietetic Association, Volume 111, Issue 12 (December 2012) published by Elsevier.

New Eye-Tracking Study Published in the Journal of the American Dietetic Association

Eileen Leahy
Elsevier
Tel: 732/238-3628
adajmedia@elsevier.com

Ryan O’Malley
American Dietetic Association
Tel: 800/877-1600, ext. 4769
media@eatright.org

Nutrition Facts labels have been used for decades on many food products. Are these labels read in detail by consumers when making purchases? Do people read only certain portions of the labels? According to a new study published in the November issue of the Journal of the American Dietetic Association, consumers’ self-reported viewing of Nutrition Facts label components was higher than objectively measured viewing using an eye-tracking device. Researchers also determined that centrally located Nutrition Facts labels are viewed more frequently and for longer than those located peripherally.

“The results of this study suggest that consumers have a finite attention span for Nutrition Facts labels: although most consumers did view labels, very few consumers viewed every component on any label,” according to investigators Dan J. Graham, PhD, and Robert W. Jeffrey, PhD, Division of Epidemiology and Community Health, University of Minnesota, Twin Cities. “These results differed from the self-reported survey responses describing typical grocery shopping and health behaviors submitted by the participants.”

Currently most US Nutrition Facts labels are positioned peripherally, not centrally, on food packages and, as such, may be less likely than they could be to catch and hold the eye of a potential consumer, according to the study.

In a simulated grocery shopping exercise, 203 participants observed 64 different grocery products displayed on a computer monitor. Each screen contained three elements, the well-known Nutrition Facts label, a picture and list of ingredients, and a description of the product with price and quantity information. These three elements were presented so that one third of the participants each saw the Nutrition Facts label on the left, right, and center. Each subject was asked whether they would consider buying the product. Participants were aware that their eye movements would be tracked, but unaware that the study focus was nutrition information.

Using a computer equipped with an eye-tracking device, investigators observed that most consumers view label components at the top more than those at the bottom. Further data suggest that the average consumer reads only the top five lines on a Nutrition Facts label.

Self-reported viewing of Nutrition Facts label components was higher than objectively measured viewing. 33% of participants self-reported that they almost always look at calorie content on Nutrition Facts labels, 31% reported that they almost always look at the total fat content, 20% said the same for trans-fat content, 24% for sugar content, and 26% for serving size. However, only 9% of participants actually looked at calorie count for almost all of the products in this study, and about 1% of participants looked at each of these other components (total fat, trans fat, sugar, and serving size) on almost all labels.

When the Nutrition Facts label was presented in the center column, subjects read one or more sections of 61% of the labels compared with 37% and 34% of labels among participants randomly assigned to view labels on the left- and right hand sides of the screen, respectively. In addition, labels in the center column received more than 30% more view time than the same labels when located in a side column.

“Taken together, these results indicate that self-reported Nutrition Facts label use does not accurately represent in vivo use of labels and their components while engaging in a simulated shopping exercise. In addition, location of labels and of specific label components relate to viewing. Consumers are more likely to view centrally located labels and nutrients nearer the label’s top. Because knowing the amounts of key nutrients that foods contain can influence consumers to make healthier purchases, prominently positioning key nutrients, and labels themselves, could substantially impact public health.”

The article is “Location, Location, Location: Eye-Tracking Evidence that Consumers Preferentially View Prominently Positioned Nutrition Information,” by Dan J. Graham, PhD, and Robert W. Jeffery, PhD. It appears in the Journal of the American Dietetic Association, Volume 111, Issue 11 (November 2011) published by Elsevier.

In an accompanying video Dr. Graham narrates a presentation of his findings. The video may be viewed at http://adajournal.org/content/podcast.

The American Dietetic Association’s Heather R. Mangieri, MS, RD, CSSD, LDN, recently discussed the relevance of attitude to behavior change. How fitting for behaviors pertaining to food and diet. The highlight of her post for me was mention of Bandura’s self-efficacy concept: if you think you can do it, regardless of skill, then you’ll find a way. Have a look at her post and let us know what you think. What goals can you set? Maybe start with an attitude goal . . . .

Here it is:

http://www.eatright.org/Public/