Sorting the Healthy Diet Signal from the Social Media Expert Noise: Preliminary Evidence from the Healthy Diet Discourse on Twitter Theo Lynn∗, Pierangelo Rosati∗, Guto Leoni Santosy, Patricia Takako Endoz ∗Irish Institute of Digital Business, Dublin City University, Ireland yUniversidade Federal de Pernambuco, Brazil zUniversidade de Pernambuco, Brazil ftheo.lynn,
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[email protected] Abstract—Over 2.8 million people die each year from being obese, a largely preventable disease [2]. In addition to loss overweight or obese, a largely preventable disease. Raised body of life, obesity places a substantial burden on society and weight indexes are associated with higher risk of cardiovascular health systems, and contributes to lost economic productivity diseases, diabetes, musculoskeletal disorders, and some cancers. Social media has fundamentally changed the way we commu- and reduced quality of life [3]. Public health education and nicate, collaborate, consume, and create content. The ease with promotion of healthy diets combined with physical activity is which content can be shared has resulted in a rapid increase in a critical public health strategy in in the mitigation of adverse the number of individuals or organisations that seek to influence affects associated with being overweight or obese. opinion and the volume of content that they generate. The Throughout the world, the Internet is a major source of nutrition and diet domain is not immune to this phenomenon. Unfortunately, from a public health perspective, many of these public health information [4]–[6]. Social media has funda- “influencers” may be poorly qualified to provide nutritional or mentally changed the way we communicate, collaborate, con- dietary guidance and advice given may be without accepted sume, and create content [7].