All over around the world more then 200 million people age 15 to 64 use illegal drugs such as cannabis, opium, amphetamine and cocaine. Lets say its almost every 20th person that lives on earth.
Scientists say that about 203 million people smoke cannabis, 56 million people use amphetamines, 21 million use cocaine and the same amount of people use opium same as heroine.
This numbers dont include people who use ecstasy, inhalants, anabolic steroids and drugs like that.
As was reported in The Lancet magazine - A lot of people hide the fact that they use drugs, because most of them fear of the consequenses.
Drugs are dangerous for people's health, they can damage the brain and heart and other inportant organs.
The research was conducted by Sydney Research Center of alcohol and drug abuse.