Download full-text


Available from: Johanna T Dwyer,
  • Source
    • "The table also indicates whether the corresponding information can be obtained from the product label. This point is relevant, because dietary supplement databases, such the National Health and Nutrition Examination Survey (NHANES) dietary supplement database, the National Library of Medicine's consumer oriented dietary supplement database and others, have been developed using information from product labels (Dwyer et al., 2008; Saldanha et al., 2010). In the US, the requirement that labels must reflect product composition is stated in the law according to DSHEA. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Food composition databases are critical to assess and plan dietary intakes. Dietary supplement databases are also needed because dietary supplements make significant contributions to total nutrient intakes. However, no uniform system exists for classifying dietary supplement products and indexing their ingredients in such databases. Differing approaches to classifying these products make it difficult to retrieve or link information effectively. A consistent approach to classifying information within food composition databases led to the development of LanguaL™, a structured vocabulary. LanguaL™ is being adapted as an interface tool for classifying and retrieving product information in dietary supplement databases. This paper outlines proposed changes to the LanguaL™ thesaurus for indexing dietary supplement products and ingredients in databases. The choice of 12 of the original 14 LanguaL™ facets pertinent to dietary supplements, modifications to their scopes, and applications are described. The 12 chosen facets are: Product Type; Source; Part of Source; Physical State, Shape or Form; Ingredients; Preservation Method, Packing Medium, Container or Wrapping; Contact Surface; Consumer Group/Dietary Use/Label Claim; Geographic Places and Regions; and Adjunct Characteristics of food.
    Journal of Food Composition and Analysis 03/2012; 25(2):226-233. DOI:10.1016/j.jfca.2011.10.003 · 1.99 Impact Factor

  • JAMA The Journal of the American Medical Association 11/2012; 308(17):1802-3. DOI:10.1001/jama.2012.28259 · 35.29 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Diabetes is one of the most widespread chronic disease. Although many medications are available for the treatment and prevention of diabetes, many people turn to nutritional supplements (NSs). In these years, the online sales have contributed to the growth of use of nutritional supplement. The aim of the research was to investigate the type of information provided by sales websites on nutritional supplements (NSs), and analyse the existence of scientific evidence about some of the most common ingredients found in available NSs for diabetes. A web search was conducted in April 2012 to identify web sites selling NSs in the treatment of diabetes using Google, Yahoo and Bing! and the key word used was "Diabetes Nutritional Supplements". Website content was evaluated for the quality of information available to consumers and for the presence of a complete list of ingredients in the first NS suggested by the site. Subsequently, in order to analyze the scientific evidence on the efficacy of these supplements a PubMed search was carried out on the ingredients that were shared in at least 3 nutritional supplements. A total of 10 websites selling NSs were selected. Only half of the websites had a Food and Drug Administration disclaimer and 40% declared clearly that the NS offered was not a substitute for proper medication. A total of 10 NS ingredients were searched for on PubMed. Systematic reviews, meta-analyses or randomized controlled trial were present for all the ingredients except one. Most of the studies, however, were of poor quality and/or the results were conflicting. Easy internet access to NSs lacking in adequate medical information and strong scientific evidence is a matter of public health concern, mainly considering that a misleading information could lead to an improper prevention both in healthy people and people suffering from diabetes. There is a clear need for more trials to assess the efficacy and safety of these NSs, better quality control of websites, more informed physicians and greater public awareness of these widely used products.
    BMC Public Health 08/2013; 13(1):777. DOI:10.1186/1471-2458-13-777 · 2.26 Impact Factor
Show more