Gniewko Wieckiewicz

June 27, 2025

PolDrugs 2025: results of the third edition of the nationwide study on psychoactive substance use in the context of psychiatry and harm reduction

Abstract Introduction: PolDrugs is a biennial epidemiological study aimed at analyzing patterns of mostly illicit psychoactive substance use in Poland…

January 28, 2024

Intensity of Psychoactive Substance Use Affects the Occurrence of Prodromal Symptoms of Psychosis

Abstract Background: Psychosis is defined as a series of symptoms that impair the mind and lead to a kind of…

July 11, 2023

Psychoactive substance use in patients diagnosed with attention-deficit/hyperactivity disorder: an exploratory study

Abstract Introduction: Attention-deficit/hyperactivity disorder (ADHD) was originally treated as a neurodevelopmental disorder that occurs mainly in children and tends to…

March 22, 2022

Cannabidiol (CBD) in the Self-Treatment of Depression-Exploratory Study and a New Phenomenon of Concern for Psychiatrists

Abstract Cannabis sativa, whose flowers are also known as marijuana or marihuana, is a recreational plant that contains many chemicals…