Binge drinking in the previous month was reported in 23.5% of US adults, and 28.1 million adults met criteria for Alcohol Use Disorder (AUD) in 2023. Individuals with AUD face increased risks of oral health problems, including caries, periodontal disease and mucosal lesions. Poor oral hygiene, nutrition and dental care all contribute to these conditions, but individuals with AUD are often under-represented in oral health surveys. Understanding relationships between oral health behaviours, attitudes and general health is crucial for designing future interventions. This pilot aims to explore the relationship between oral and systemic health in subjects with AUD, focusing on oral health behaviours, salivary biomarkers and clinical phenotype, including systemic biomarkers of inflammation, to inform future research on oral–systemic interactions in AUD.

This protocol has two parts. Part 1 involves cognitive interviews to assess the content validity and interpretability of the Oral Health Behaviours Assessment (OHBA) questionnaire. Part 2 will collect biological and behavioural data from treatment-seeking patients with AUD and matched controls (age, sex and smoking status), including saliva, blood, dental exams, and health behaviour and symptom measures. Inpatients with AUD will provide biospecimens and answer symptom severity questionnaires at admission and again at the dental exam visit (7–12 days later), while controls will provide a single set of measures at their dental exam visit. Oral health will be assessed through structured dental and periodontal examinations, radiographs and validated questionnaires (including the OHBA). Additional data will include alcohol use history, psychiatric and medical history assessments, dietary recall, and measures of stress, sleep and mood to capture potential moderators of oral–systemic relationships. Biomarkers of inflammation and stress will be quantified from saliva and blood using immunoassays. Primary outcomes will compare oral health, salivary biomarkers and clinical measures between AUD and controls, while secondary outcomes will evaluate within-subject changes in patients with AUD during inpatient treatment and early abstinence.

This clinical protocol was approved by the National Institutes of Health Institutional Review Board (IRB #002005). Prior to enrolling, participants will be informed of the study purpose, risks and benefits, and study procedures, and evaluated for understanding prior to signing consent. Part 1 of the protocol is currently active and recruiting participants for cognitive interviews. The study findings will be disseminated through journals and conferences related to addiction medicine, psychology, immunology, neuroscience and dentistry. We expect the results of the pilot study will inform future research on oral health and salivary bioscience while also providing treatment-seeking patients with AUD targeted information on the importance of oral health behaviours for maintaining oral and systemic health.

NCT06684483; preresults.

Chronic caregiving stress accelerates biological aging, reflecting disease risk and mortality; however, the underlying mechanisms are poorly understood. Epigenetic clocks, which can be estimated from levels of DNA methylation in a subset of cytosine-phosphate-guanine loci in the genome, have been proposed as a promising biological age estimator. The objectives of this scoping review are to systematically scope the literature on the effects of stress on biological ageing measured by epigenetic clocks in family caregivers of patients diagnosed with cancer.

This review will be conducted following Joanna Briggs Institute methodology based on Arksey and O’Malley’s and Levac et al’s framework and reported using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines for scoping reviews. Studies will be included if (1) the studies focus on unpaid family caregivers of patients diagnosed with cancer; (2) caregivers are adults (≥18 years of age) and (3) the study measured epigenetic clocks. The search will encompass literature and peer-reviewed literature in PubMed/MEDLINE (National Library of Medicine), Embase (Elsevier), Cochrane CENTRAL (Wiley & Sons), Web of Science: Core Collection (Clarivate Analytics), CINAHL (EBSCOhost) and PsycInfo (American Psychological Association).

Since the scoping review methodology focuses on published literature, this study does not require ethical approval. We will publish our findings in a peer-reviewed journal and plan to disseminate our work in conferences and scientific meetings.

Open Science Framework (https://doi.org/10.17605/OSF.IO/KW7RT).