Social media influencers impact on youth
Advantages of social networks
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What is the influence of social networks on young people?
Social networks are harmful
However, the use of social networks can also negatively affect adolescents by distracting them, disrupting their sleep, and exposing them to bullying, rumor spreading, unrealistic opinions about other people's lives, and peer pressure.
How do social networks influence students' daily lives?
Social networks favor the participation of a certain group online, deploying learning outside the classroom, increasing the popularity of a user; but, the misuse of them can cause damage not only to the user, but to his family, friends and in some cases to a country.
Social networking article
Social networks allow teens to create online identities, communicate with others, and build social ties. These networks can provide teens with valuable support, especially helping those who experience exclusion or have disabilities or chronic illnesses.
Due to the impulsive nature of teens, experts suggest that teens who post content on social networks are at risk of sharing intimate photographs or very personal stories. This can result in them being harassed, bullied or even blackmailed. Often, teens post without considering consequences or privacy issues.
Young people on the Internet
In addition, the constant flow of benefits offered by social networks keeps us coming back for more. The ventromedial prefrontal cortex, striatum  and ventral tegmental area  of the brain are activated every time we receive a "like" or a new follower.
Researchers observed a connection between increased Internet use and decreased offline social interaction and psychological well-being when the Internet began to gain popularity.  The researchers explained these results with the hypothesis that the Internet favors low-quality relationships. As a result of the emergence of online social networking, there has been growing concern about a possible relationship between individuals' activities in these forums and symptoms of psychopathology, particularly depression.
Self-identity, also known as self-concept, can be defined as an individual's set of beliefs about oneself.  It is also defined as an individual's response to "Who am I?"  Especially for adolescents and young adults, social media allow for the exploration and formation of self-identity. Compared to other developmental stages, most online identity exploration occurs during early adolescence.   Researchers have identified some of the most common ways in which adolescents explore their identity early through self-exploration (e.g., to investigate how others react), social compensation (e.g., to overcome shyness), and social facilitation (e.g., to facilitate relationship formation).   In addition, younger adolescents are more likely to use the Internet to communicate with strangers and form new relationships, whereas older adolescents are more likely to socialize with their current friends. People have a strong need for social affiliation, but find it difficult to make social connections in the outside world, and social media can provide a sense of connection that satisfies their needs for belonging, social feedback, and social validation.... 
Dangers of social networks
Aguaded, J. I., Ferrés i Prats, J., Cruz Díaz, M. R., Pérez Rodríguez, M. A., Sánchez Carrero, J. and Delgado Ponce, Á. (2011). The degree of media competence in Andalusian citizenship. Huelva: Grupo Comunicar Ediciones/Grupo de Investigación Ágora, University of Huelva.
Bennett, W.L., & Segerberg, A. (2013). The logic of connective action: Digital media and the personalization of contentious politics. Massachusetts: Cambridge University Press. (https://goo.gl/NxxV1Z).
Catalina García, B., López de Ayala, M.C. & García Jiménez, A. (2014). The risks of adolescents on the Internet: minors as actors and victims of Internet dangers. Revista Latina de Comunicación Social, 69, 462-485. DOI: 10.4185/RLCS-2014-1020.
Chaudron, S. (2015). Young Children (0-8) and Digital Technology: A qualitative exploratory study across seven countries. Luxembourg: Publications Office of the European Union. https://doi.org/10.2788/00749
De-Frutos, B., & Marcos, M. (2017). Dissociation between negative experiences and risk perception of social networks in adolescents. The Information Professional, 26(1), 88-96. https://doi.org/10.3145/epi.2017.ene.09