Environmental health literacy (EHL) includes knowledge of health effects due to environmental exposure and skills to protect health from environmental risks. This study investigated some aspects about EHL of the Italian adult population. Data were collected through questionnaires (n = 672) and analysed through multivariable logistic regression models. Results showed that participants with incomplete/insufficient self-perceived knowledge of health effects due to environmental risks verified less information about this topic (adjOR = 0.38 (CI95% 0.25-0.59)/0.09 (0.04-0.21); p < 0.001/<0.001), potentially spreading fake news. The self-perceived exposure to pollution was higher in participants living in towns than in rural areas (small, medium, big towns adjOR = 2.37 (1.41-3.97), 2.10 (1.11-3.96), 3.11 (1.53-6.31); p = 0.001, 0.022, 0.002) and lower in participants with incomplete/insufficient knowledge about pollution effects (adjOR = 0.54 (0.32-0.92)/0.30 (0.13-0.67); p = 0.022/0.004), confirming that knowledge is essential to achieve awareness. Since insufficient self-perceived knowledge of pollution effects was negatively associated with the adoption of pro-environmental behaviours (adjOR = 0.37 (0.15-0.90); p = 0.028), EHL was proven to be a virtuous behaviour promoter. Finally, a lack of institutional support, time and cost were identified as barriers to pro-environmental behaviours. This study provided useful data to design prevention programmes, underlined some barriers to pro-environmental behaviours and highlighted the need to promote attitudes and behaviours aimed at contrasting environmental pollution, thus protecting human health.
Keywords: adult population; environmental burden of diseases; environmental health literacy; environmental risk perception; pro-environmental attitudes; pro-environmental behaviours.