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Aims: Abundant research indicates that ghrelin hormone levels are associated with alcohol use and addiction. One of the mediators of this association may be impulsivity, which is one of the common traits observed in alcohol addiction and some eating disorders. This study evaluated participants with alcohol dependency and healthy volunteers to determine whether trait impulsivity and ghrelin levels are associated. Methods: This study analyzed trait impulsivity scores and fasting serum ghrelin levels of 44 males with alcohol dependency and 48 healthy male participants. The Barratt Impulsiveness Scale and the UPPS Impulsive Behaviour Scale (UPPS) were used to measure trait impulsivity levels. Penn Alcohol Craving Scale and Yale Brown Obsessive Compulsive Drinking Scale for heavy drinking were used to assess craving at the baseline and after the detoxification period. Results: Alcohol-dependent patients’ fasting ghrelin levels were significantly higher than that of healthy participants. Ghrelin plasma levels were positively correlated with UPPS total impulsivity scores and sensation-seeking among healthy individuals. In alcohol-dependent participants, there was a positive correlation between UPPS urgency scores obtained at the baseline and fasting ghrelin levels before and after the detoxification period. Conclusions: Ghrelin–impulsivity relationship could be observed in certain dimensions of impulsivity in both alcohol-dependent and healthy individuals and even independent of the effect of alcohol. Although the associated impulsivity dimensions differ in different groups, the results are parallel to other studies in terms of demonstrating the relationship between ghrelin and impulsivity.

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