When to see a doctor. See a doctor if you or a loved one has memory problems or other dementia symptoms. Some treatable medical conditions can cause dementia symptoms, so it's important to determine the underlying cause.
A brief history of tobacco. (CNN) -- Tobacco was first used by the peoples of the pre-Columbian Americas. Native Americans apparently cultivated the plant and smoked it in pipes for medicinal and ceremonial purposes.
Heroin smoking by 'chasing the dragon': origins and history. by. Strang J, Griffiths P, Gossop M. National Addiction Centre. (The Maudsley/Institute of Psychiatry), London, UK. Addiction 1997 Jun; 92(6):673-83; discussion 685-95. ABSTRACT. The history of heroin smoking and the subsequent development and spread of 'chasing the dragon' are examined. The first heroin smoking originated in Shanghai in the 1920s and involved use of porcelain bowls and bamboo tubes, thereafter spreading across much of Eastern Asia and to the United States over the next decade.