Heroin users who inject the drug expose themselves to additional risks, including contracting human immunodeficiency virus (HIV), hepatitis B and C, and other blood-borne viruses. Chronic users who inject heroin also risk scarred or collapsed veins, infection of the heart lining and valves, abscesses, pneumonia, tuberculosis, and liver and kidney disease. In 2004, 8,000 meth labs were seized in the US. Child welfare workers removed more than 3,000 children from the labs. Short-term effects of marijuana use include memory loss, distorted perception, trouble with thinking and problem solving, and anxiety. Students who use marijuana may find it hard to learn, thus jeopardizing their ability to achieve their full potential. The kerosene is removed and gas crystals of crude cocaine are left at the bottom of the tank. Typically, the crystals are dissolved in methyl alcohol. They are then recrystallized and dissolved in sulfuric acid, which results in cocaine that is about 60% pure. |
