Quick Answer. The liver is an organ of the digestive system. The role of the digestive system is to transform food into necessary energy and to rid the body of solid waste. The liver functions within this system by producing bile and by filtering the blood from the digestive system.
The Times analysis of 2009 death statistics, the most recent available, showed: 1  For the first time ever in the US, more people were killed by drugs than motor vehicle accidents. 2  37,485 people died from drugs, a rate fueled by overdoses on prescription pain and anxiety medications, versus 36,284 from traffic accidents.
Partnership for Drug-Free Kids â Where Families Find Answers. Almost six million people die from tobacco use and 2.5 million from harmful use of alcohol each year worldwide, the World Health Organization (WHO) reports.