*2.2. Data Collection*

For this study, Elsevier's Scopus database was used to carry out the analysis. We identified studies from 1978 to 2018 that referred to social networks, health, or young people.

Scopus is a scientific bibliographic database of items from scientific journals. This database has been claimed as "the largest index database", including up to 65 million records and claims, many of which are in the health field, with titles providing complete coverage of Medline, Embase, and Compendex. In addition to articles, this database includes series, conferences, papers, books, and patents. The sources in the database date back to 1823, and it was established in 1996. Moreover, Scopus also provides the performance status of papers and authors according to the citations received for each work [38,39].

For this research, the inclusion criteria were the period from 1978 to 2018, and the theme of social media and health.
