Long-term effects of marijuana use
Increased risk of cancer
Respiratory problems: coughing and wheezing
Increased risk of heart attack
Weakening of the immune system
Problems with learning, attention, and memory
Emotional and behavioral problems
Addiction in predisposed individuals, more often among teens
Adverse effects on pregnancy
Social problems among teenagers
The use of marijuana among teens is now rapidly escalating in the most industrialized nations. It is well known that there are many adults who enjoy a smoke once or twice a week without any major health consequences. It is the minority of heavy users who have lost control and whose physical and mental health is seriously damaged.
How "minor" is this minority, though?
According to recent statistics of theUS National Institute of Drug Abuse (NIDA), there were an estimated 2.1 million Americans who started using marijuana in 1998; more than 72.0 million Americans (1/3 of the US population) 12 years and older have tried marijuana at least once in their lifetimes and more than 120,000 people undergoing treatment. In 1999, theCenter on Addiction and Substance Abuse (CASA) pointed out that 88,000 teens had been admitted for treatment for marijuana, more than those treated for any other drug or alcohol. In Minneapolis/ St. Paul half of the admitted were under 18. Other scientists believe that there were many more teenage users needing treatment than what was previously thought.
Data provided by the NIDA also showed that between 1991 and 1999 the percentage of 8th- and 10th- graders who have used marijuana had increased twice. The Emergency Department mentions of marijuana use increase in many US states with the highest percent increase among the 12- to 17-year-olds. Juvenile arrests testing positive for marijuana ranged from a low of 40% to 63% in US.
Poisonous Plants: Cannabis (Cannabis sativa)