Drug abuse problems in countries of the Andean subregion.

The scarcity of epidemiological data makes it difficult for an accurate and comprehensive assessment to be made of the drug abuse situation in countries of the Andean subregion. Available evidence, however, indicates that in Bolivia, Colombia and Peru prevalence and incidence rates of drug abuse, particularly of the abuse of basic cocaine paste, are relatively high. Studies indicate that in Bolivia 4-5 per cent of youth are habitual cocaine users and that in Colombia drug abuse was in 1984 the seventh leading cause of psychiatric morbidity. A survey in Peru shows that 37 per cent of secondary school students use drugs, while 27 per cent of the respondents used basic cocaine paste as their first drug. It appears that the abuse of basic cocaine paste has spread evenly across urban social classes. The illegal cultivation of the coca bush has drastically increased in countries of the Andean subregion. For example, it is estimated that more than 135,000 hectares of coca bush are cultivated in Peru, producing approximately 135,000 tons of coca leaves a year, while the amount needed for legitimate purposes in that country is estimated at 10,000 tons a year. In the same country, seizures of basic cocaine paste increased from 4,755 kg in 1980 to 7,168 kg in 1983, and of macerated coca leaf from 2,570 kg in 1979 to 27,822 kg in 1984. The demand for illicit cocaine has substantially increased in the world. It is estimated that the total amount of illicit cocaine consumed in the world was 33-45 tons in 1981 and 50-61 tons in 1983.