Background: Schools can reduce student access to competitive foods and influence healthy food choices by improving the school nutrition environment. This study describes changes in competitive nutrition environments in 100 K-8 schools participating in the Philadelphia Campaign for Healthier Schools.
Methods: Interviews with school staff were used to elicit information about policies, practices, and guidelines to restrict/limit competitive foods in schools, before and 1 year into the campaign. To increase the validity of responses, respondents provided documentation for reported policies and guidelines. Baseline interviews were conducted between April and June 2011 and follow-up interviews were conducted between April and June 2012.
Results: At follow-up, significantly more schools reported having policies and/or guidelines in place to regulate food as a reward in the classroom, food served at parties and celebrations, outside foods allowed in school, and the availability of sodas and sugar-sweetened beverages. There were no measurable effects on food available in school stores, fundraisers, or afterschool programs. Availability of concrete documentation of policies was limited, but when provided, it corroborated the interview responses.
Conclusions: In the context of a comprehensive school wellness policy, school wellness councils were associated with increases in school-level policies and practices that improved the competitive nutrition environment.
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http://dx.doi.org/10.1111/josh.12613 | DOI Listing |
RSC Adv
January 2025
Gansu Zhongshang Food Quality Test and Detection Co., Ltd Lanzhou 730010 China.
Ferrihydrite (Fh), a widely distributed mineral in the environment, plays a crucial role in the geochemical cycling of elements. This study used experimental and computational approaches to investigate the adsorption behavior of seven heavy metal ions on Fh. The pH edge analysis revealed that the adsorption capacity followed the order: Pb > Cu > Zn > Cd > Ni > Co > Mn, with Pb showed the highest adsorption.
View Article and Find Full Text PDFJ Fluoresc
January 2025
Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Phayathai Road Pathumwan, 10330, Thailand.
This study presents a new highly sensitive and specific time-resolved fluoroimmunoassay (TRFIA) for the measurement of trace amounts of the urinary 8-hydroxy-2`-deoxyguanosine (8-OHdG) which is a biomarker for oxidative stress on DNA. The assay relied on a competitive binding approach and a mouse monoclonal antibody which recognized 8-OHdG with high specificity. In this assay, 8-OHdG conjugated with bovine serum albumin protein (8-OHdG-BSA) was employed as a solid phase antigen.
View Article and Find Full Text PDFAllergy
January 2025
Schroeder Allergy and Immunology Research Institute, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Canada.
Allergic reactions to foods are primarily driven by allergen-binding immunoglobulin (Ig)E antibodies. IgE-expressing cells can be generated through direct switching from IgM to IgE or a sequential class switching pathway where activated B cells first switch to an intermediary isotype, most frequently IgG1, and then to IgE. It has been proposed that sequential class switch recombination is involved in augmenting the severity of allergic reactions, generating high affinity IgE, differentiation of IgE plasma cells, and in holding the memory of IgE responses.
View Article and Find Full Text PDFProtein content is an important index in the assessment of dairy nutrition. As a crucial source of protein absorption in people's daily life, the quality of milk powder products not only has a deep impact on the development of the dairy industry, but also seriously damages the health of consumers. It is of great significance to find a faster and more accurate method for detecting milk protein content.
View Article and Find Full Text PDFFood Nutr Bull
January 2025
School of Business, Xi'an International University, Xi'an, China.
Fluctuations in economic policy often create ripple effects that can significantly impact commodity prices, including those of essential food items, with potential consequences for food security. The five emerging nations outlined as BRICS (Brazil, Russia, India, China, and South Africa) have most recently extended by including four new members (Egypt, Ethiopia, Iran, and the UAE) on January 1, 2024. Additionally, Argentina and Saudi Arabia are anticipated to join the group soon.
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