研究:酒精"毒"过海洛因

　　Alcohol is more dangerous than illegal drugs like heroin and crack cocaine, according to a new study。

　　British experts evaluated substances including alcohol, cocaine, heroin, ecstasy and marijuana, ranking them based on how destructive they are to the individual who takes them and to society as a whole。

　　Researchers analyzed how addictive a drug is and how it harms the human body, in addition to other criteria like environmental damage caused by the drug, its role in breaking up families and its economic costs, such as health care, social services, and prison. Heroin, crack cocaine and methamphetamine, or crystal meth, were the most lethal to individuals。

　　When considering their wider social effects, alcohol, heroin and crack cocaine were the deadliest. But overall, alcohol outranked all other substances, followed by heroin and crack cocaine。

　　Experts said alcohol scored so high because it is widely used and has devastating consequences not only for drinkers but for those around them. When drunk in excess, alcohol damages nearly all organ systems. It is also connected to higher death rates and is involved in a greater percentage of crime than most other drugs, including heroin。