The Perceptions, Attitudes and Practices of Registered Dietitians Regarding Functional Foods

The term “functional food” (FF) has a variety of definitions resulting in term ambiguity. It is unclear Registered Dietitians’ (RDs) understanding and practices about FF. A descriptive, cross-sectional study investigated RDs’ perceptions, attitudes and practices regarding FF. A national random sample (n=1800) of RDs was mailed a FF questionnaire, 385 (22%) responded. Given five definitions from food-nutrition authorities, the majority of RDs did not agree on a definition, although three-fourths (n=292, 75.8%) perceived fortified foods as FF. Registered Dietitians agreed FF could improve health (n=266, 69.1%), prevent disease (n=282, 73.2%) and treat clientele (n=246, 63.9%), however were neutral (41.6%) or disagreed (37.7%) FF were herbs, or equivalent to medicine (32.7%, 49.2% respectively). Most RDs (n=290, 75.9%) ate FF; fewer (n=231, 61.4%) professionally recommended them. Nearly all (n=353) indicated interest in learning about FF. Registered Dietitians revealed inconsistencies between their perceptions, attitudes and practices regarding FF. Professional education is needed to resolve discrepancies regarding FF

Qualified Health Claim Language affects Purchase Intentions for Green Tea Products in the United States

Qualified health claims (QHC) describe diet–disease relationships and summarize the quality and strength of evidence for a claim. Companies assert that QHCs increase sales and take legal action to ensure claims reflect their interests. Yet, there is no empirical evidence that QHCs influence consumers. Using green tea as a case study, this study investigated the effects of QHCs on purchase intentions among adults 55 years and older living in the US. An online survey using a between-subjects design examined QHCs about the relationship between green tea and the reduced risk of breast and/or prostate cancer or yukichi fruit juice and the reduced risk of gastrocoridalis, a fictitious relationship. QHCs written by a green tea company generated greater perceptions of evidence for the relationship, greater confidence in green tea and cancer, and increased purchase intentions for green tea than other QHCs. Factors that mitigated the claim’s effects on purchase intentions are: Race/ethnicity; age; importance of health claims; supplement use; health; worry about health/becoming sick with cancer; worry that led to dietary change; green tea consumption; and familiarity with the green tea–cancer. Consumers who made health-related dietary change in the past year and consider health claims important indicated greater purchase intentions than others

Scientific Evidence on Functional Food and Its Commercial Communication: A Review of Legislation in Europe and the USA

This study aims at understanding how scientific evidence to substantiate nutrition and health claims in food commercial communication is regulated in Europe and the USA. A literature review was performed on the scientific evidence required by the European Food Safety Authority and the US Food and Drug Administration to substantiate food nutrition and health claims. Studies published in Scopus, Medline, Scirus, and Google Scholar from 2007 to 2012 were reviewed as well as documents released by both agencies. A total of 38 documents met our inclusion criteria out of 743 documents initially identified during our search. These agencies provide general guidelines on how to conduct food and health studies, intended to demonstrate a cause‐and‐effect relationship between a given food and a benefit to health. Despite this, they need to broaden the depth and scope of the guidelines provided to companies seeking to substantiate their claims and to provide further and more precise information concerning the evaluation of studies and application processes. No review has hitherto specifically focused on the subject of scientific evidence required by EU and US food agencies to substantiate health claims. This research thus leads to significant recommendations on how to improve current food industry guides.This research was conducted under the R&D&i project “Reclamos de salud en la publicidad de alimentos y comprensión del consumidor” (“Health claims in food advertising and consumer understanding”- GV/2016/088), funded by the Generalitat Valenciana, Spain and directed by Cristina González Díaz