Weekly use of MDMA over a prolonged period may actually cause serotonin receptors to retreat into the dendrite of serotonin nerve cells. Depression and deficits in memory have been shown to occur more frequently in long-term MDMA users. For over a thousand years South American indigenous peoples have chewed the coca leaf (Erythroxylon coca), a plant that contains vital nutrients as well as numerous alkaloids, including cocaine. 338,000 people used heroin last month. Previously available only on the black market for thousands of dollars, the recipe for meth is now accessible free of charge on the Internet. Using common cold medicines such as pseudoephedrine and ephedrine combined with other substances, meth can be made by anyone, almost anywhere. Meth labs have been set up in bedrooms, back yards, trailers, bathtubs, storage units and vans. | 
