ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Understanding Addiction: Teen Marijuana Use Can Have Permanent Effects On the Brain

Updated on July 25, 2013

Risks of teen marijuana use are worse than originally thought. According to a new study, daily use of marijuana (also known as cannabis, marihuana, weed or pot) in teens can cause anxiety and depression. It has been shown to have permanent effects on the developing brain of teen marijuana users.

Previous studies have shown that marijuana use can affect teen behavior. Dr. Gabriella Gobbi and her team of researchers at the Research Institute of the McGill University Health Centre wanted to know the effects of marijuana on the brains of teenagers; they also wanted to know if teens are more susceptible to its neurological effects than adults.

Results of the study suggest that cannabis use affects levels of norepinephrine and serotonin. These brain chemicals are involved in regulation of neurological functions, including anxiety, mood control, depression and stress.

According to Dr. Gobbi, teenagers who use cannabis have lower serotonin and lower norepinephrine transmission. These changes can lead to mood disorders and greater susceptibility to stress, respectively.

This study shows that teens are more susceptible to the neurological effects of Cannabis than adults. Marijuana use can lead to permanent effects on the brain of teenagers.

These findings are significant because there are millions of marijuana users worldwide.

A study done by the Public Health Agency of Canada in 2004 showed that Canadian teenagers are among the largest users of marijuana in the world. According to the study, 42.7% of Canadian adolescents have used marijuana; in the United States and in Europe, 40% and 35% of teenagers have used marijuana, respectively.

The United Nations estimated that about 162 million people or 4% of the world's adult population use Cannabis every year. About 22.5 million people (0.6%) use it every day.

So, irreversible brain effects on adult and teenage marijuana users that can lead to mood disorders, anxiety, depression and susceptibility to stress can have long-term health consequences for millions of people worldwide.

Teen Marijuana Use Can Have Permanent Effects On the Brain

Background Information: Effects and Consequences of Marijuana Or Cannabis Use

The terms cannabis or marijuana refers to the dried flowers as well as the leaves and stems of the female cannabis plant.

The major psychoactive chemical compound in cannabis is Δ9-tetrahydrocannabinol (THC). Various studies have shown that other cannabinoid compounds may also play a role in its psychoactive effects.

Cannabis is consumed in many different ways involving inhalation of smoke. It has been used for recreational and medicinal purposes.

Cannabis use has psychoactive, neurological and physiological effects. It causes changes in perception and mood. Other common effects include impairment of memory and concentration, increased heart rate, lowered blood pressure and impairment of psychomotor coordination.

Long-term cannabis use has been shown by studies to be associated with development of anxiety, depression and psychosis.

Medical uses of cannabis or marijuana include the relief of nausea and vomiting as well as stimulation of hunger in chemotherapy and AIDS patients. It has also been used to lower intraocular eye pressure in patients with glaucoma. More commonly, it has been used as a pain reliever.

Marinol and other synthesized cannabinoids are sold as prescription drugs in Canada, Mexico, Spain, Austria and Germany as well as the Netherlands, United States and United Kingdom.

The possession, use or sale of cannabis is illegal in most parts of the world.

Brain Effects of Marijuana


This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

Show Details
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)
ClickscoThis is a data management platform studying reader behavior (Privacy Policy)