Hash / Marijuana

Hash / Marijuana

Cannabis is one of the illegal drugs that is most widely used. Use is common in adolescents and young people as it is often mistakenly considered a ‘soft’ drug.

19.5% of the Spanish population between 15 and 65 years of age have tried it on some occasion. A figure which increases to nearly one in three (28.2%) if we focus on the 15-29 year old age group.

Contrary to common beliefs, marijuana can be addictive. Research suggests that 30% of users may develop some degree of problem related to its use.


  • Double the chances of developing a mental disorder.
  • A considerably increased possibility of suffering a psychotic episode.
  • Changes in normal cognitive development in young people under the age of 18.
  • Isolation, apathy, general lack of motivation.
  • A disproportionate increase in appetite.
  • Excessive drowsiness.
  • Increased irritability and aggression.

From a health perspective it should be taken into account that cannabis derivatives which are smoked (with deep inhalation, no filter, pulmonary retention of the smoke) regularly can intensify the known risks associated with smoking, causing a wide range of effects. Amongst the main consequences of cannabis use the following should be noted:

  • Respiratory: Chronic cough and bronchitis in regular users of high doses.
  • Cardiovascular: Worsening of any symptoms of high blood pressure of cardiac insufficiency.
  • Endocrine System: Alterations in reproductive hormones and sexual maturation.
  • Immune System: Chronic use of cannabis reduces immune activity.
  • Use combined with alcohol can cause unconsciousness.