Guilt in alcohol use: A systematic review

For decades, alcohol use disorder has been investigated in an attempt to understand its processes and implications. However, among all of the factors involved in alcohol use disorder, the role of guilt in alcohol use remains poorly explained, with many contradictory results. Therefore, the purpose of this review is to conduct a systematic analysis of the literature from 1990 to 2022 to review the studies investigating the link between guilt and alcohol consumption. Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method, 31 studies were included in this review. The results of this work enable to highlight the plurality of guilt that has been studied in the literature. Grouped in two categories: state guilt and trait guilt, they seem to have diverse implications towards alcohol use or misuse. Guilt proneness seems to act as a protective factor towards alcohol use, except for the few studies conducted on a clinical population. Numerous studies indicated that state guilt is deleterious toward alcohol use, even if some results are contradictory. Furthermore, this work allows us to shed light on the limits of the studies currently carried out, and thus to propose new directions for future studies.