Family History of Cancer and Head and Neck Cancer Risk in a Chinese Population.

Background: The aim of this study was to investigate whether family history of cancer is associated with head and neck cancer risk in a Chinese population.

Materials And Methods: This case-control study included 921 cases and 806 controls. Recruitment was from December 2010 to January 2015 in eight centers in East Asia.

An epidemiologic review of marijuana and cancer: an update.

Marijuana use is legal in two states and additional states are considering legalization. Approximately 18 million Americans are current marijuana users. There is currently no consensus on whether marijuana use is associated with cancer risk.