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The primary aim of the current study was to examine the frequency of food addiction in a group of university students and whether it differed among chronotypes. The second aim was to investigate the relationship of chronotypes with impulsivity, poor sleep quality and attention deficit/ hyperactivity disorder (ADHD) symptoms and to evaluate how this relationship affects food addiction. 328 university students were included in the study. Adult Attention Deficit/Hyperactivity Disorder Self-Report Scale (ASRS), Morningness-Eveningness Questionnaire (MEQ), Barratt Impulsiveness Scale-11 Short Form (BIS-11-SF), Yale Food Addiction Scale (YFAS) and Pittsburgh Sleep Quality Index (PSQI) were administered. Evening types scored significantly higher on ASRS and BIS-11 SF (p &lt; .001, p &lt; .001 respectively). Based on YFAS scores, 12.5% (n = 41) of the participants met the criteria for food addiction. The number of participants fulfilling the criteria for food addiction was higher among the evening types compared to intermediate and morning types (p = .006, p = .004, respectively). The mean ASRS and BIS-11 SF scores of the students who met the criteria for food addiction were significantly greater than those who did not (p &lt; .001, p &lt; .001, respectively). 63.4% (n = 26) of the students meeting the criteria for food addiction scored 6 or higher on PSQI versus 32.0% (n = 92) of the students who did not (p &lt; .001). Mediation analysis showed that the direct effect of MEQ scores on food addiction was not significant (β = −0.009, p = .723). However, lower MEQ scores had an indirect effect on food addiction through higher ASRS scores (β = −0.027; p &lt; .05 bias corrected and accelerated 95% CI −0.052 to −0.011). The results of the present study suggest that higher prevalence of food addiction among evening types seems to be related to higher occurrence of ADHD symptoms in these chronotypes. Further population-based studies with a larger sample size are needed to confirm our findings.

chronobiology international

The relationship of chronotypes with food addiction, impulsivity, and attention deficit hyperactivity disorder symptoms in a sample of undergraduate university students