Background: Obesity is the accumulation of excess fat in the body and represents a public health problem globally, including Saudi
Arabia. Therefore, this study aimed to estimate the prevalence of obesity among adolescents at intermediate and secondary schools
in Hail city and to determine the level of awareness about its complications. Methods: A descriptive cross-sectional study has been
conducted between 19 March 2019 and 18 April 2019. Results: The study included 400 students; the ratio of male to female was 1:1
with a mean age ±SD of 16±1.6 years. Approximately, 59.8% of participants were found to be aware of obesity and its complications.
The main source of information was social media indicated by 67.4% of individuals. The factors that significantly affected the
awareness of students were age (P=0.0001), gender (P=0.0001), weight (P=0.0001), BMI (P=0.0001), waist circumference (P=0.0001),
mood (P=0.0001) and school achievements (P=0.0001). Conclusions: The prevalence rates of obesity and overweight presented onethird
of the participants in this study and the level of awareness among students regarding obesity complications was indicated in
two-third of participants, and the social media derived as the first source of awareness.
Keywords: Awareness, Obesity, School students, Hail.