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.
1. Roughly 230 million people have used an illegal drug at least once in 2010. In 2010, 5% of the world adult population aged 15-64 used illegal drugs at least once. Problem drug users, who mainly depend on cocaine and heroin, make up an estimated 0.6% of the world adult population, amounting to roughly 27 million.