Exploring the relationship between age at first drink, low-risk drinking knowledge and drinks counting: six rounds of a country-wide survey in Australia

DNA Methylation in Alcohol Use Disorder

Excessive drinking damages the central nervous system of individuals and can even cause alcohol use disorder (AUD). AUD is regulated by both genetic and environmental factors. Genes determine susceptibility to alcohol, and the dysregulation of epigenome drives the abnormal transcription program and promotes the occurrence and development of AUD. DNA methylation is one of the earliest and most widely studied epigenetic mechanisms that can be inherited stably. In ontogeny, DNA methylation pattern is a dynamic process, showing differences and characteristics at different stages. DNA dysmethylation is prevalent in human cancer and alcohol-related psychiatric disorders, resulting in local hypermethylation and transcriptional silencing of related genes. Here, we summarize recent findings on the roles and regulatory mechanisms of DNA methylation, the development of methyltransferase inhibitors, methylation alteration during alcohol exposure at different stages of life, and possible therapeutic options for targeting methylation in human and animal studies.

Development and validation of the Alcohol Message Perceived Effectiveness Scale

To assist intervention developers assess the likely effectiveness of messages designed to encourage greater use of protective behavioral strategies, this study developed and tested the Alcohol Message Perceived Effectiveness Scale (AMPES). Recommendations from the message effectiveness literature were used to guide AMPES development. The resulting scale was administered in online surveys at two time points to Australian drinkers aged 18-70 years (3001 at Time 1 and 1749 at Time 2). An exploratory factor analysis identified the presence of two factors ('effect perceptions' and 'message perceptions') that accounted for 71% of the variance in scores. Internal consistency of scores was good for the overall scale (ω = 0.83) and 'effect perceptions' factor (ω = 0.85), but suboptimal for the 'message perceptions' factor (α = 0.60). Scores on both factors significantly predicted enactment of protective behavioral strategies. The AMPES appears to be an appropriate tool to assess perceived message effectiveness and assist in the development of public health messages designed to reduce alcohol consumption.

Alcohol Consumption Patterns: A Systematic Review of Demographic and Sociocultural Influencing Factors

Background: Excessive alcohol consumption has negative effects not only on the drinkers’ health but also on others around them. Previous studies suggest that excessive alcohol consumption can be related to a combination of factors such as age, family background, religiosity, etc. Investigating and clarifying these roots of alcohol consumption is crucial so that the right type of interventions can be designed in a specific and targeted manner. Objectives: This work was conducted as a systematic review to reveal the factors associated with alcohol consumption and to heighten the understanding of the differences among various communities and segments of the population regarding their usage of alcohol. Data sources: A systematic search of Web of Science, PubMed, ScienceDirect, and Google Scholar was performed. Results: Forty-five studies were included in the review after excluding irrelevant records and duplicates. Conclusions: Alcohol consumption patterns can be associated with several factors related to communities and individuals, and our review revealed demographic factors, including age and proximity to alcohol outlets, as well as social factors, including family background, socioeconomic background, and religious influence. These findings can be used to establish a guideline for further studies in understanding alcohol consumption patterns among individuals according to their personal characteristics and sociocultural backgrounds.

Understanding and Overcoming Barriers to Drink Counting

Objectives: Drink counting has been found to be an effective protective behavioral strategy (PBS) to reduce alcohol consumption. However, little is known about attitudes to this strategy and barriers and facilitators to its use. The aim of this study was to explicate these factors and draw comparisons with less efficacious PBSs. Method: In Stage 1, 1,703 Australian drinkers were surveyed about their perceptions of five PBSs ("Count the number of drinks you have," "Drink slowly rather than gulping or sculling," "Refuse an alcoholic drink you are offered because you don't really want it," "Avoid trying to 'keep up' or 'outdrink' others," and "Decide not to exceed a certain number of drinks"). Respondents reported perceived believability, relevance, ease of use, effectiveness, barriers, and facilitators. In Stage 2, 10 focus groups were conducted with drinkers to identify potential methods of effectively promoting drink counting. Results: Overall, drink counting was rated less favorably than the less-efficacious PBSs, indicating a need to inform drinkers of the importance and feasibility of this strategy to encourage its use. The main identified barriers were a lack of awareness of the long-term harms associated with alcohol use, social factors (e.g., peer pressure), and difficulty counting when intoxicated. Participants suggested improving drinkers' understanding of alcohol-related harms and developing mechanisms to assist with counting. Conclusion: To encourage drink counting, information campaigns are needed to educate the community about the long-term risks of alcohol use. Evidenced-based mechanisms to facilitate drink counting may be welcomed by drinkers.