Social media is inextricably linked to our lives. The use of social media has grown enormously over the years. As of January 2021, an estimated 4.6 billion people have access to the internet of which 4.2 billion people are social media users. Even taking into consideration multiple accounts and business accounts, a significant number of the population use and interact on social media [1]. Social media is defined as “forms of electronic communication (such as websites for social networking and microblogging) through which users create online communities to share information, ideas, personal messages, and other content” [2]. This definition may not necessarily capture the diversity of social media today. Still, the tenets of social media such as communication, user generation of content, and information sharing are seen across a host of social media platforms ranging from Facebook and Instagram to Twitter.

Social media users are diverse across ages, ethnicities, education levels, and come from a host of different backgrounds [1]. Having access to this diverse group of people creates a unique opportunity to use social media platforms as a means of promoting and disseminating health interventions. A health intervention is an act performed for, with, or on behalf of a person or population whose purpose is to assess, improve, maintain, promote, or modify health, functioning, or health conditions [3]. Social media platforms have been recognized and used for health interventions and hold tremendous potential to help elicit positive health behavior changes [4,5]. For example, health interventions to promote nutritional education have used social media platforms to identify behaviors and offer intervention [6]. Other social media health interventions include sexual health promotion [7], interventions for diabetes [8], and interventions targeting addiction and recovery [9].

The use of social media as a conduit for health communication is well established [10]. Social media provides health care professionals a platform to freely share information and combat health misinformation [11,12]. Social media health interventions also provide an opportunity to improve public health outcomes, such as in the recent COVID-19 pandemic where they have been used to disseminate information and increase vaccine uptake [10,13-16]. The rising use of social media and other digitized technology for health intervention has even led to the emergence of a new field called “Digital Public Health,” which is defined as “the use of technology, new types of data, and new ways of working that come with the digitization of public health and associated data’’[17].

To best leverage the opportunities and affordances of utilizing and disseminating health interventions over social media, there exists a responsibility to ensure that the design, development, and evaluation of such interventions are done in a systematic and evidence-based manner. There is a need to scope the current landscape of social media health interventions to better understand the elements which underpin these interventions. The last paper that took a broad look into the use of social media for health promotion and intervention was back in 2011, which primarily focused on the features of social media platforms [13]. Since then, the landscape of social media has changed, and the design of interventions has had to change with it. For those looking to build successful interventions, a need exists to scope the current landscape to understand what elements drive the design, development, and evaluation of social media health interventions.

The objective of this review is to map the elements that drive the design, development, and evaluation of social media health interventions. We define “social media health intervention” as interventions that make use of social media platforms to disseminate awareness or deliver health-related information and educational initiatives to the public. As such, only studies that describe a health intervention in which social media is the conduit for dissemination or delivery will be considered for review. Health interventions that do not use social media will be excluded. For those included papers we will seek to chart the elements that drive the design, development, and delivery of such interventions, including their platforms and targeted health behaviors.

This scoping review will be guided by the methodology proposed by Arksey and O’Malley [14] with updated enhancements proposed by Levac et al [18] and Peters et al [15]. This framework was chosen for its clarity in the stages of conducting a scoping review, including (1) identification of the research question; (2) identification of studies; (3) selection of studies; (4) charting the data; and (5) collating, summarizing, and reporting the results. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) checklist will also provide further details and clarity [16].

The primary question for our review is to understand the elements that drive the design, development, and evaluation of social media health interventions. The research questions below are aligned with our objectives of scoping the current landscape in order to inform those who wish to design evidence-based and effective social media health interventions. The following questions will guide our review:

The authors arrived at these questions after extensive discussions and brainstorming with the research team.

A comprehensive review of literature will be conducted using the following databases : (1) PubMed, (2) PsycINFO, (3) EMBASE, (4) Web of Science, (5) Scopus, (6) CINAHL, (7) ERIC, (8) MEDLINE, and (9) Google Scholar. To capture relevant gray literature, we will conduct a search on Google Scholar. We will use an effort-bounded stopping criteria in which we examine the first 100 search results, then reassess, continuing to the next page of results, iteratively assessing if the results remain relevant to our scope [19].

Keyword search terms for this review were developed through discussion between the protocol authors. Input from a subject librarian was also sought to ensure keywords captured relevant data and the databases were appropriate. The keywords are based on the 2 overarching concepts of the review concept: social media and health intervention (Tables 1 and 2). A sample search strategy is provided in Table 3. Any amendments to the search strings will be thoroughly documented in the final scoping review.

As we wish to broadly map the existing literature, we will include a variety of studies, including published and gray literature. Studies to be reviewed will consist of those that use social media to disseminate or deliver a health intervention. Studies that describe a health intervention but do not use social media as a core component of dissemination or delivery will be excluded. A temporal limit will also be set, ensuring that only papers from 2005 to date will be reviewed. The date restriction has been set in consideration of the public release and advent of modern social media platforms [20]. Only studies in English will be reviewed. Textbox 1 summarizes our inclusion and exclusion criteria. These will be modified iteratively if needed.

The study selection for this review will follow a 2-step screening process. First, after databases and gray literature searches are concluded, results will be imported into a citation manager. Deduplication will be conducted at this stage, and all remaining studies will be imported to a review software called Rayyan [21]. Second, 2 reviewers will independently screen title–abstracts against the exclusion and inclusion criteria to determine which studies will be included in full-text screening. Interrater disagreement will be solved through discussion with a third independent mediator.

Relevant data will be charted out from all included studies by 2 or more independent reviewers. The reviewers will develop and pilot a data extraction instrument that will be refined iteratively as we carry out the extraction process. Extracted data will include article details such as author/s, year of publication, evaluation method, design model, behavioral model, social media platform, audience type, and outcomes. A draft data extraction tool can be found in Table 4.

We will present our charted data both graphically and narratively. Thoughtful consideration to using text and images to illustrate our results will be undertaken. In our summary will we consider the broader implications of our findings as we hope our review will provide practical context and guidance for those desiring to create social media health interventions.

Ethics approval was not required for this study. Future dissemination of the final review will include publication of the final scoping review in a peer-reviewed journal with a good impact factor.