Regular opium use and subsequent incidence of cancer

Opium is derived from the resin of the opium poppy (Papaver somniferum) and has been harvested and used for medicinal and recreational purposes since ancient times. Extracts have been found at prehistoric sites across western, southern, and central Europe from the early Neolithic period (pre-400 BC),1Tétényi P Opium poppy (Papaver somniferum): botany and horticulture.Hortic Rev (Am Soc Hortic Sci). 1997; 19: 373-408Google Scholar and methods for...