The human gastrointestinal tract is host to a complex community of microorganisms called gut microbiota that is crucial for maintaining health through various metabolic, immunological and protective functions. Despite their significance, public awareness of gut microbiota remains limited among children and adults. This study aimed to assess and…

Background: Social factors play an important role in adolescents' behaviors. This study aims to understand percentages of health risk behaviors across country in Europe, North America, and China; explore the associations between friendly school and family contexts and involvement for several health risk behaviors among adolescents. Methods: Data…