The Effect of Environmental Factors, Health Behaviors, and Psychosocial Aspects on Allergic Diseases in Korean Adolescents

<i>Background and Objectives</i>: Adolescence is a critical period of physical and mental development, yet allergic diseases are often poorly managed. Factors such as sleep deprivation, obesity, smoking, and mental stress can worsen allergic conditions and complicate treatment. This study examines the environmental, behavioral, and psychosocial factors influencing allergic diseases in Korean adolescents using data from the Korean National Health and Nutrition Examination Survey (KNHNES). <i>Materials and Methods</i>: From the 25,534 participants in the Fifth KNHNES, 1630 adolescents (aged 13-18 years) were selected. We analyzed demographic and lifestyle factors, including gender, age, housing type, family size, economic status, obesity, tobacco and alcohol use, sleep duration, and physical activity. Psychosocial factors such as stress perception, suicidal ideation, depressive symptoms, mental health counseling, and self-rated health were also examined. <i>Results</i>: The prevalence rates of allergic diseases were 23% for allergic rhinitis (AR), 11% for atopic dermatitis (AD), and 9.8% for asthma (AS), with 35.8% of adolescents having at least one allergic condition. Smoking was significantly associated with AS (odds ratio [OR] 1.753, <i>p</i> = 0.006), while shorter sleep durations increased AR risk (<i>p</i> = 0.000). Male adolescents had a lower risk of AD (OR 0.706, <i>p</i> = 0.046), and high economic status was inversely correlated with AD (OR 0.445, <i>p</i> = 0.006). Positive self-rated health was linked to lower AS risk (OR 0.447, <i>p</i> = 0.000). AR was significantly associated with male gender (OR 1.391, <i>p</i> = 0.045), high economic status (OR 1.784, <i>p</i> = 0.026), and high stress perception (OR 1.479, <i>p</i> = 0.013). <i>Conclusions</i>: Low self-rated health and high stress perception have been identified as risk factors for allergic diseases during adolescence. Integrating psychosocial counseling with medical treatment may improve management and outcomes.