More than 90% of internet users are active on social media, which had 4.76 billion users worldwide in January 2023. The digital revolution has reshaped the news landscape and changed how users interact with information. Social media has fostered an active relationship with the media, including the ability to interact directly with the content presented. It also has augmented media's ability to reach a large audience with tight deadlines.
These developments suggest that social media can be a useful tool in everyday medical practice for professionals and patients. But social media also can spread misinformation, as happened during the COVID-19 pandemic.
This characteristic is the focus of the latest research by Fabiana Zollo, a computer science professor at Ca' Foscari University of Venice, Italy, and coordinator of the Data Science for Society laboratory. The research was published in The BMJ. Zollo's research group aims to assess the effect of social media on misinformation and consequent behaviors related to health. "The study results focus primarily on two topics, the COVID-19 pandemic and vaccinations, but can also be applied to other health-related behaviors such as smoking and diet," Zollo told Univadis Italy.
Social media has become an important tool for public health organizations to inform and educate citizens. Institutions can use it to monitor choices and understand which topics are being discussed most at a given time, thus comprehending how the topics evolve and take shape in public discourse. "This could lead to the emergence of people's perceptions, allowing us to understand, among other things, what the population's needs might be, including informational needs," said Zollo.
Tenuous Causal Link
While social media offers public health organizations the opportunity to inform and engage the public, it also raises concerns about misinformation and the difficulty of measuring its effect on health behavior. Although some studies have observed correlations between exposure to misinformation on social media and levels of adherence to vaccination campaigns, establishing a causal link is complex. As the authors emphasize, "despite the importance of the effect of social media and misinformation on people's behavior and the broad hypotheses within public and political debates, the current state of the art cannot provide definitive conclusions on a clear causal association between social media and health behaviors." Establishing a clear causal link between information obtained from social media and offline behavior is challenging due to methodologic limitations and the complexity of connections between online and offline behaviors. Studies often rely on self-reported data, which may not accurately reflect real behaviors, and struggle to isolate the effect of social media from other external influences. Moreover, many studies primarily focus on Western countries, limiting the generalizability of the results to other cultural and geographical conditions.
Another issue highlighted by Zollo and colleagues is the lack of complete and representative data. Studies often lack detailed information about participants, such as demographic or geolocation data, and rely on limited samples. This lack makes it difficult to assess the effect of misinformation on different segments of the population and in different geographic areas.
"The main methodologic difficulty concerns behavior, which is difficult to measure because it would require tracking a person's actions over time and having a shared methodology to do so. We need to understand whether online stated intentions do or do not translate into actual behaviors," said Zollo. Therefore, despite the recognized importance of the effect of social media and misinformation on people's general behavior and the broad hypotheses expressed within public and political debates, the current state of the art cannot provide definitive conclusions on a causal association between social media and health behaviors.
Institutions' Role
Social media are a fertile ground for the formation of echo chambers (where users find themselves dialoguing with like-minded people, forming a distorted impression of the real prevalence of that opinion) and for reinforcing polarized positions around certain topics. "We know that on certain topics, especially those related to health, there is a lot of misinformation circulating precisely because it is easy to leverage factors such as fear and beliefs, even the difficulties in understanding the technical aspects of a message," said Zollo. Moreover, institutions have not always provided timely information during the pandemic. "Often, when there is a gap in response to a specific informational need, people turn elsewhere, where those questions find answers. And even if the response is not of high quality, it sometimes confirms the idea that the user had already created in their mind."
The article published in The BMJ aims primarily to provide information and evaluation insights to institutions rather than professionals or healthcare workers. "We would like to spark the interest of institutions and ministries that can analyze this type of data and integrate it into their monitoring system. Social monitoring (the observation of what happens on social media) is a practice that the World Health Organization is also evaluating and trying to integrate with more traditional tools, such as questionnaires. The aim is to understand as well as possible what a population thinks about a particular health measure, such as a vaccine: Through data obtained from social monitoring, a more realistic and comprehensive view of the problem could be achieved," said Zollo.
A Doctor's Role
And this is where the doctor comes in: All the information thus obtained allows for identifying the needs that the population expresses and that "could push a patient to turn elsewhere, toward sources that provide answers even if of dubious quality or extremely oversimplified." The doctor can enter this landscape by trying to understand, even with the data provided by institutions, what needs the patients are trying to fill and what drives them to seek elsewhere and to look for a reference community that offers the relevant confirmations.
From the doctor's perspective, therefore, it can be useful to understand how these dynamics arise and evolve because they could help improve interactions with patients. At the institutional level, social monitoring would be an excellent tool for providing services to doctors who, in turn, offer a service to patients. If it were possible to identify areas where a disinformation narrative is developing from the outset, both the doctor and the institutions would benefit.
Misinformation Vs Disinformation
The rapid spread of false or misleading information on social media can undermine trust in healthcare institutions and negatively influence health-related behaviors. Zollo and colleagues, in fact, speak of misinformation in their discussion, not disinformation. "In English, a distinction is made between misinformation and disinformation, a distinction that we are also adopting in Italian. When we talk about misinformation, we mean information that is generally false, inaccurate, or misleading but has not been created with the intention to harm, an intention that is present in disinformation," said Zollo.
The distinction is often not easy to define even at the operational level, but in her studies, Zollo is mainly interested in understanding how the end user interacts with content, not the purposes for which that content was created. "This allows us to focus on users and the relationships that are created on various social platforms, thus bypassing the author of that information and focusing on how misinformation arises and evolves so that it can be effectively combated before it translates into action (ie, into incorrect health choices)," said Zollo.
This story was translated from Univadis Italy, which is part of the Medscape Professional Network, using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.