RESUMO
BACKGROUND: This study determined the association between mental health and risky oral health and sexual health behaviours. METHODS: A household cross-sectional survey was conducted in Ile-Ife, Nigeria between December 2019 and January 2020. Data were collected from 10 to 19-year-old on the sociodemographic profile (age, sex at birth and socioeconomic status); mental health problems (psychological distress, depressive symptoms and suicidal ideation); and mental (smoking habit, consumption of alcohol, use of psychoactive substances), sexual (history of vaginal or anal sexual intercourse; transactional sex, multiple sex partners, use of condom at last sexual intercourse) and oral (frequency of daily tooth brushing, daily frequency of consumption of refined carbohydrate in-between-meals, frequency of use of dental floss, history of dental service utilization in the last 12 months and dental anxiety) health risk factors. Binary logistic regression analysis was conducted to determine the association between risky oral (neglecting to brush twice daily and frequent consumption of refined carbohydrates in-between-meals), and sexual (neglecting to use condoms during the last sex act and having multiple sex partners) health behaviours as outcome variables, and mental health status as the explanatory variables. An ordinal logistic regression model was also developed where the outcome variable was the number of risky health behaviours. The models were adjusted for the socio-demographic variables and history of dental service utilisation in the last 12 months of the survey. RESULTS: High psychological distress was significantly associated with lower odds of frequent consumption of refined carbohydrates in-between-meals (AOR = 0.32; 95%CI 0.23, 0.47), and having multiple sex partners (AOR = 0.10; 95%CI 0.02, 0.57); but higher odds of having a higher number of risky behaviours (AOR = 3.04; 95%CI 2.13, 4.33). Having depressive symptoms was significantly associated with higher odds of neglecting to use condom at the last sexual intercourse (AOR = 7.20; 95%CI 1.94, 26.76) and having multiple partners (AOR = 95.43; 95%CI 24.55, 370.90). Suicidal ideation was significantly associated with lower odds of neglecting to use condom at the last sexual intercourse (AOR = 0.00; 95%CI 0.00, 0.00) and having multiple sex partners (AOR = 0.00; 95%CI 0.00, 0.00). CONCLUSION: The associations between psychological distress and oral and sexual health risk behaviours in adolescents seem complex and need to be studied further.