Background Opium use has been associated with an increased risk of cancers of the lung,
oesophagus, and pancreas, and it was recently classified by the International Agency for …

Opium use was recently classified as a human carcinogen for lung cancer by the
International Agency for Research on Cancer. We conducted a large, multicenter case …

Purpose: The aim of this study was to investigate occupational risk factors associated with
bladder cancer. Materials and Methods: In this case–control study, control group included …

Background: Lung cancer is the leading cause of cancer-related death worldwide, and half
of all incident lung cancers are believed to occur in the developing countries, including Iran …

Abstract In September 2020, the International Agency for Research on Cancer (IARC)
announced that opium consumption causes cancer in humans--a conclusion drawn after …

Background In recent years, lung cancer (LC) incidence has increased in Iran. The use of
opium and its derivatives (O&D) has increased as well. This study aimed to investigate the …

Objective The scientific literature presents conflicting data on a possible causal relationship
between opium users and the development of head and neck cancer (HNC). This study …

Background: It seems that there may be a relation between OPIUM ADDICTION and bladder
cancer. This study has been performed to find this relationship in Kerman province …

Background: Colorectal cancers, including colon, rectum and anus, are relatively prevalent
in Iran. Use of opium and its derivatives is also considerably prevalent in some areas in Iran …

Evidence is presented that opium addiction is a risk factor for cancer of the bladder. A case‐
control study of 99 bladder cancer patients admitted to Nemazee Hospital in Shiraz, Iran was …