Since the emergence of the recent Coronavirus Disease of 2019 (COVID-19) and its spread as a pandemic, there has been a parallel spread of false and misleading information, known as an infodemic. The COVID-19 infodemic has induced distrust in scientific communities, governments, institutions and the population, and a confidence crisis that has led to harmful health behaviours, also impacting on mental health. The aim of this study is to provide a scoping review of the scientific literature about COVID-19-related misinformation and conspiracy theories, focusing on the construction of a conceptual framework which is useful for the interpretation of the conspiracy theory phenomenon surrounding COVID-19, and its consequences. Particular socio-environmental conditions (i.e., low educational level, younger age), psychological processes and attitudes (such as low levels of epistemic trust, the avoidance of uncertainty, extraversion, collective narcissism, and a conspiracy-prone mindset), and contextual factors (e.g., high levels of self-perceived risk and anxiety) seem to underpin the adherence to beliefs that are not solely the domain of paranoids and extremists but a widespread phenomenon that has caused important health, social and political consequences.

International media has paid attention to the use of substances by healthy subjects to enhance cognitive performance. Medical students are liable to use cognitive enhancers (CE) with the aim of improving academic performance. The study explored use and attitudes toward the use of CE in Italian medical students. The authors anonymously surveyed 433 medical students of the University of Modena and Reggio Emilia with an ad hoc 36-items questionnaire. CE were broadly defined as any substance taken with the purpose of improving cognitive functions, from readily available beverages and substances, such as coffee, tea, energy drinks, and supplements to prescription only medication, such as psychostimulants and modafinil. Response rate was 83.8% (n = 363). While the majority of the students (74.7%; n = 271) said that they had used substances to improve cognitive functions, only 2 students (0.6%) reported the use of prescription-only medications in the last 30 days. Main reasons for not taking prescription-only drugs were concerns about safety and side effects, reported by 83.3% of students (n = 295). A positive attitude toward use was held by 60.3% (n = 219) subjects. The surveyed Italian medical students used many substances as CE, but this did not seem to apply significantly to psychostimulants. A multivariable analysis showed that the following variables were related to the propensity to use substances as CE: male gender, self-reported memory impairment, concerns about worsening of cognitive performance, lifetime use of at least one illegal substance, use of any substance (both legal or illegal) in the last 30 days.

Since the emergence of the recent Coronavirus Disease of 2019 (COVID-19) and its spread as a pandemic, there has been a parallel spread of false and misleading information, known as an infodemic. The COVID-19 infodemic has induced distrust in scientific communities, governments, institutions and the population, and a confidence crisis that has led to harmful health behaviours, also impacting on mental health. The aim of this study is to provide a scoping review of the scientific literature about COVID-19-related misinformation and conspiracy theories, focusing on the construction of a conceptual framework which is useful for the interpretation of the conspiracy theory phenomenon surrounding COVID-19, and its consequences. Particular socio-environmental conditions (i.e., low educational level, younger age), psychological processes and attitudes (such as low levels of epistemic trust, the avoidance of uncertainty, extraversion, collective narcissism, and a conspiracy-prone mindset), and contextual factors (e.g., high levels of self-perceived risk and anxiety) seem to underpin the adherence to beliefs that are not solely the domain of paranoids and extremists but a widespread phenomenon that has caused important health, social and political consequences.