2. Materials and Methods
depression, Depression
POLAND
Two hundred patients who had undergone a Roux-en-Y gastric bypass (RYGB) or a sleeve gastrectomy (SG) at least 6 months before, completed the Beck Depression Inventory (a self-rating scale to screen for depression symptoms). Patients with a score of ≥12 points were eligible for the study [Patients were randomized and double-blinded into two groups, one of which received a probiotic or placebo for a period of 5 weeks:Probiotic: Sanprobi Barrier (manufacturer: Sanprobi sp. z o. o. sp. k., Szczecin, Poland), consisting of Placebo: corn starch, maltodextrins, vegetable protein;Dosage: 4 capsules (2 × 10The product is available commercially on the Polish market and its composition and dosage have been approved by the relevant health authorities.Patients in both groups were educated about the principles of a healthy diet and were given a balanced meal plan tailored to the needs of patients after bariatric surgery [