Karen Tandy, the administrator of the U.S. Drug Enforcement Administration, examined the harm done to the youth of America by myths surrounding marijuana use in an article for the March 2005 issues of Police Chief Magazine.
Driving after smoking even a small amount of marijuana almost doubles the risk of a fatal highway accident, according to an extensive study of 10,748 drivers involved in fatal crashes between 2001 and 2003.
A vast amount of scientific research has shown that heavy marijuana use negatively effects smokers' learning abilities and social skills, causing problems in their daily lives and compounding their existing problems.
Although legalization activists and many marijuana users believe smoking pot has no negative effects, scientific research indicates that marijuana use can cause many health problems.
Long-term marijuana use causes memory, speed of thinking and other cognitive abilities get worse over time, but cognititive abilities are also affected in short-term pot smokers who use marijuana frequently.
Marijuana is a green or gray mixture of dried, shredded flowers and leaves of the hemp plant Cannabis sativa. There are over 200 slang terms for marijuana.
States which have passed medical marijuana laws did so to help patients with serious medical conditions, but many are finding the system is easily abused by those seeking to get high.
When talking to those who are committed or long-time marijuana users, there is not much you can say that will change their opinion that smoking weed is perfectly harmless.
The vast majority of pot smokers do not develop a marijuana addiction, but some smokers do develop all of the symptoms of an actual addiction after chronic marijuana use.
Symptoms associated with marijuana withdrawal may be milder than withdrawal from alcohol and many other drugs, but they are intense enough to cause people trying to quit to relapse.
Men who smoke marijuana frequently have significantly less seminal fluid, a lower total sperm count and their sperm behave abnormally, all of which may affect fertility adversely.
The test is completely confidential and anonymous, your results are not recorded and are available only to you.
There are hundreds of different slang terms used for marijuana or cannabis that have been been derived from the source of the drug, the effect it has on users or the appearance of the processed plant.
A team of researchers from the United States and Australia has found that the age when a person begins to smoke marijuana has a significant influence on whether they will develop problems with drugs and alcohol later in life.
If you are a male between the ages of 20 and 35 and you are a frequent or long-time marijuana smoker, you could be significantly increasing your risk of developing testicular cancer.
Young people who do not smoke marijuana end up with a better quality of life and higher levels of educational achievement than their peers who do smoke marijuana. Those who do smoke pot early in life have lower incomes and greater health problems later in life, according to a study.
Sustained attention to timing-tasks was substantially altered in laboratory rats when they were given a synthetic cannabinoid - a compound similar to the naturally occurring one in marijuana.
There is evidence that individuals who start to smoke marijuana at an early age, while the brain is still developing, show deficits in cognition which are not seen in individuals who begin use of the drug when they are older.
Teens who smoke cigarettes are 14 times likelier than their counterparts who have never smoked to try marijuana, six times likelier to be able to buy marijuana in an hour or less and 18 times likelier to say most of their friends smoke marijuana.
An analysis of research studies with long-term, recreational users of marijuana has failed to reveal a substantial, systematic effect on the neurocognitive functioning of users.
While it's the husband among newlywed couples who has more influence on whether the couple engages in heavy drinking, it's the wife who appears to be in the driver's seat when it comes to determining her husband's marijuana use.
A new study shows that teens that use marijuana frequently also may face the same withdrawal symptoms that have been found to challenge adult marijuana users trying to quit.
Admission rates for treatment for marijuana as a primary substance of abuse increased 162 percent nationally between 1992 and 2002, according to a trend report from the Substance Abuse and Mental Health Services Administration.
People who smoked marijuana had changes in the blood flow in their brains even after a month of not smoking, which could explain in part the problems with thinking or remembering found in other studies of marijuana users.
The principal active ingredient in marijuana causes transient schizophrenia-like symptoms ranging from suspiciousness and delusions to impairments in memory and attention, according to a Yale research study.