Trial Parameters
Brief Summary
The goal of this clinical trial is to investigate the biological pathways underlying the beneficial effect of omega-3 polyunsaturated fatty acids (n-3 PUFA) on mental health in patients with alcohol use disorder. The main questions this study aims to answer are: * Can n-3 PUFA improve mood disorders (depression, anxiety), craving for alcohol, cognitive impairments and sociability disorders ? * Are the beneficial effects of n-3 PUFAs due to a modification of the gut microbiota and/or the inflammatory status? Participants will : * take a supplementation of omega-3 or placebo during 3 months * do a brain MRI * be interviewed for a dietary anamnesis * provide blood, stool and saliva samples * perform psychological tests and neuropsychological tasks Researchers will compare active comparator (omega-3) with placebo comparator (olive oil) to see if omega-3 can have a beneficial effect on AUD patients.
Eligibility Criteria
Inclusion Criteria: * Diagnosis of alcohol use disorder (≥ 4 DSM-5 criteria) * Patient at the hospital for a 3 week alcohol withdrawal program * Gender : male and female * Age : between 18 and 70 years old * Language : french * Alcohol consumption less than 48 jours before admission Exclusion Criteria: * Presence of another addiction, except for smoking and cannabis use * Presence of a psychiatric comorbidity (axis 1 DSM-5) * Current or recent use (\< 2 months) of antibiotics, probiotics, fibre supplements * Current or recent (\< 2 months) use of omega-3 supplements * Current or recent (\< 2 months) use of oral anti-coagulants drugs * Current or recent (\< 2 months) double anti-platelet therapy * Coagulation disorders * Current or recent (\< 1 month) use of non-steroidal anti-inflammatory drugs and glucocorticoids * Morbid obesity : body mass index \> 35 kg.m-2 * Bariatric surgery * Type I diabetes and type II diabetes not stabilised (i.e. glycated haemoglobin \> 7.2 and unstable drug