This thesis explored the intricate relationship between alcohol consumption, the COVID-19 pandemic, public opinion, and the role of the Master of Nursing in healthcare. It began by examining the well-documented harmful effects of alcohol on the human body, both physically and behaviourally. At the same time, it addressed the large physiological impact of the pandemic, emphasizing the importance of a strong immune system during such global health crises. The study presented four hypotheses, each of which deals with the dynamics of changes in alcohol consumption patterns in response to the pandemic, divided by gender, age, marital status and knowledge about the harmful effects of alcohol on the body. Empirical data confirmed these hypotheses, revealing fluctuating drinking habits among individuals during COVID-19. In parallel, the research examined public opinion on alcohol and alcohol consumption. It revealed a range of viewpoints, from those who consider alcohol a social and cultural commodity to others who approach it cautiously, acknowledging its potential harm and addiction. The conclusion emphasizes the key role of nurses with a master's degree in healthcare, especially during crises such as a pandemic. These health professionals are well equipped to assess, educate and support individuals with alcohol-related problems, contributing to wider public health initiatives and policies. This thesis highlights the importance of a comprehensive and nuanced approach to health care and public health, taking into account the development of health behaviour and the indispensable role of health professionals in times of crisis.