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BACKGROUND: The prevalence of mental health problems is increasing, particularly among young people, making the prevention of mental health problems and improvements in care a public health priority. Social media, with its wide reach and low-cost information dissemination, has emerged as an important tool for public mental health campaigns in high-income countries. However, there is a limited understanding of the reach of public mental health social media campaigns and their impact on mental health knowledge, attitudes, stigma, and behaviors, such as help-seeking. OBJECTIVE: This review aimed to assess the effectiveness of social media campaigns in high-income countries in improving knowledge and attitudes toward mental health, reducing stigma, promoting help-seeking behavior, and reaching underserved communities. METHODS: A scoping review was conducted, involving a comprehensive search of 5 databases (MEDLINE, Embase, PsycINFO, Web of Science, and CINAHL) and gray literature from January 2004 to May 2024. We included quantitative evaluations of social media public mental health campaigns from high-income countries with comparable social media use and public health care systems. A narrative synthesis summarized the study characteristics, campaign exposure, reach, and effectiveness by outcomes. RESULTS: The review included 26 studies for analysis. Less than half of the studies (11/26, 42%) reported on the reach of mental health campaigns, but for those that did, younger age groups and women were more likely to be aware of campaigns. The most frequently reported outcomes were attitudes about mental health (17/23, 74%) and stigma (17/23, 74%), followed by mental health knowledge (16/23, 70%) and behavior change (15/23, 65%), such as seeking help for a mental health condition. While stigma and attitudes showed the most improvement before and after the campaigns (5/11, 45%), behavior change showed the least positive change over time (1/8, 13%). However, behavior change was the most improved outcome for those who were campaign aware compared to those unaware (12/12, 100%), whereas positive attitudes often did not differ. In fact, some studies showed campaign awareness was associated with negative stereotypes. CONCLUSIONS: The evidence highlights the potential of social media campaigns in improving mental health knowledge, attitudes, stigma, and behavior change. However, due to the methodological limitations of these evaluations, it is challenging to determine if the positive changes in these outcomes are a result of the campaigns or other factors. Campaign awareness seems to be important for initiating behavior change, but these changes are often short-lived. Sustainable impact on mental health requires both individual behavior change and service improvements. Targeting more mental health campaigns at underserved groups could help to reduce stigma and raise awareness in these groups, which could lead to timelier access to services. Consistent measurement of campaign reach and behavior change outcomes could help to understand and maximize campaign impact.
Plackett et al. (Mon,) studied this question.