Acne vulgaris is diagnosed in the majority of adolescents, decreasing their quality of life, while the diet may influence its aetiology in a gender-dependent manner. The aim of the study was to analyse associations between nutritional behaviours and acne-related quality of life in a population of Polish male adolescents. The study was conducted on a population of Polish secondary school adolescents (a studied sample of 925 adolescents), while the random quota sampling procedure of secondary schools was applied. To assess acne-related quality of life, the Acne Quality of Life (AQoL) Scale and Acne Disability Questionnaire (ADQ) were applied, while the Social Quality of Life (SOCQOL) Score and Cardiff Acne Disability Index (CADI) were calculated. To assess the diet, an Acne-specific Food Frequency Questionnaire (Acne-FFQ) was applied. Neither for the ADQ results, nor for the CADI calculated on the basis of ADQ, was there an association with dietary intake (p > 0.05). The results of the SOCQOL Score (calculated on the basis of AQoL) were positively correlated with the intake of fish (p = 0.0085; R = 0.1144), salty snacks (p = 0.0495; R = 0.0854), and non-chocolate confectionary (p = 0.0078; R = 0.1156). In a group of respondents declaring any acne-related quality of life problems in AQoL, while compared with those declaring no such problems, higher intakes of dairy beverages other than milk (p = 0.0063), white bread (p < 0.0001), other white cereal products (p < 0.0001), fast foods (p = 0.0006), salty snacks (p < 0.0001), chocolate confectionary (p < 0.0001), and other confectionary (p < 0.0001), but lower intake of wholegrain bread (p = 0.0084) were observed. It may be concluded that acne-related quality of life is associated with dietary intake in a population of Polish male adolescents. In the studied population, the most prominent influencing factors were salty snacks and non-chocolate confectionary, with both of them having a proacnegenic effect.
Keywords: acne vulgaris; adolescents; dermatological diseases; diet; juvenile acne; nutrition; quality of life; severity of acne.