Jibril, N.UOlusegun, BUmar, A.GIbraheem, M.AAbdulkadir, KImam, A.AYusuf, A.G2023-06-072023-06-072018http://integrityresjournals.org/journal/https://uilspace.unilorin.edu.ng/handle/20.500.12484/11011Human behaviour plays a significant role in the maintenance of health, prevention of disease and disease causation; hence knowledge of health risk behaviours becomes necessary to maintain healthy life. This study examined knowledge, practice and factors associated with health risk behaviours among students in three secondary schools in Kwara State. A descriptive cross-sectional research design using a proportional cluster sampling method to select three public schools and three hundred and sixty senior secondary school students were sampled for the study. A self-designed questionnaire was used for data collection. Data collected were analyzed using frequency counts and percentages to answer research questions while Chi-square (x2) was used to test hypotheses. The result revealed that 85.0% of students have knowledge about forms and factors associated with Health Risk Behaviours (HRB). It also shows that knowledge of health risk behaviours has negative impact on the student’s school attendance and achievement. This study concluded that knowledge and peer group influence contributed to health risk behaviours among secondary school students in Ilorin, Kwara State. It was therefore recommended that health education on dangers of knowledge of health risk behaviours should be emphasized in schools, school environment be made free of substances been abused by the studentsenHealth risk factors, health risk behaviours, knowledge, secondary school studentsArticle