Study: Alcohol, not marijuana, is bad for your brain

New research suggests that frequent drinking is more likely to affect teens' brain tissue than regular pot use

Topics: AlterNet, marijuana, Alcohol, University of California, Alcoholism,

This article originally appeared on AlterNet.

AlterNet Some new science demonstrates that marijuana may not have the harmful effects critics claim. In fact, while pot had no measured impact in a new study, the very legal and very lucratively-marketed substance alcohol actually has a worse health impact on young users.

Specifically, a new study of substance-using teenagers’ brains shows that the regular use of alcohol had a harmful effect on the boozing group, while the toking-up group’s brains suffered little alteration.

From Medical Daily, emphasis ours:

The researchers, from the University of California, San Diego and the University of Pittsburgh Medical Center, performed the study on 92 16- to 20-year-olds. The scientists scanned their brains both before and after an 18-month period. Over the course of the 18 months, half of the teens, who already had an extensive track record with alcohol and marijuana, continued their vices as they had before. The other half continued to abstain or drink a minimal amount, like they too had done before the study.

In addition to the brain scans, the study also required a detailed toxicology report and substance use assessment. The teens also were interviewed every six months. Researchers did not check the teens’ cognitive ability, but simply took brain scans.

The researchers found that, after the year and a half was over, kids who had drank five or more alcoholic beverages twice a week had lost white brain matter. That means that they could have impaired memory, attention, and decision-making into adulthood. The teens that smoked marijuana on a regular basis had no such reduction.

While other studies have had less clear results, this study is important for a few reasons.

First, it shows that early alcohol abuse can be dangerous because it damages the tissues that influence judgement and self-control. ”If teens decrease their tissue health and cognitive ability to inhibit themselves, they might become more likely to engage in risky behavior like excessive substance use,” the Huffington Post quotes study co-author Joanna Jacobus, postdoctoral fellow at the University of California, San Diego, as saying.

The study authors also said that marijuana strains vary widely, so it’s harder to determine which if any ingredients in a typical joint have positive or negative effects.

The study will be published in the journal  Alcoholism: Clinical and Experimental Research.

Next Article

Related Stories

Featured Slide Shows

The week in 10 pics

close X
  • Share on Twitter
  • Share on Facebook
  • Thumbnails
  • Fullscreen
  • 1 of 11
  • This photo. President Barack Obama has a laugh during the unveiling of the George W. Bush Presidential Center in Dallas, Tx., Thursday. Former first lady Barbara Bush, who candidly admitted this week we've had enough Bushes in the White House, is unamused.
    Reuters/Jason Reed

  • Rescue workers converge Wednesday in Savar, Bangladesh, where the collapse of a garment building killed more than 300. Factory owners had ignored police orders to vacate the work site the day before.
    AP/A.M. Ahad

  • Police gather Wednesday at the Massachusetts Institute of Technology to honor campus officer Sean Collier, who was allegedly killed in a shootout with the Boston Marathon bombing suspects last week.
    AP/Elise Amendola

  • Police tape closes the site of a car bomb that targeted the French embassy in Libya Tuesday. The explosion wounded two French guards and caused extensive damage to Tripoli's upscale al-Andalus neighborhood.
    AP/Abdul Majeed Forjani

  • Protestors rage outside the residence of Indian Prime Minister Manmohan Singh Sunday following the rape of a 5-year-old girl in New Delhi. The girl was allegedly kidnapped and tortured before being abandoned in a locked room for two days.
    AP/Manish Swarup

  • Clarksville, Mo., residents sit in a life boat Monday after a Mississippi River flooding, the 13th worst on record.
    AP/Jeff Roberson

  • Workers pause Wednesday for a memorial service at the site of the West, Tx., fertilizer plant explosion, which killed 14 people and left a crater more than 90 feet wide.
    AP/The San Antonio Express-News, Tom Reel

  • Aerial footage of the devastation following a 7.0 magnitude earthquake in China's Sichuan province last Saturday. At least 180 people were killed and as many as 11,000 injured in the quake.
    AP/Liu Yinghua

  • On Wednesday, Hazmat-suited federal authorities search a martial arts studio in Tupelo, Miss., once operated by Everett Dutschke, the newest lead in the increasingly twisty ricin case. Last week, President Barack Obama, Sen. Roger Wicker, R.-Miss., and a Mississippi judge were each sent letters laced with the deadly poison.
    AP/Rogelio V. Solis

  • The lighting of Freedom Hall at the George W. Bush Presidential Center Thursday is celebrated with (what else but) red, white and blue fireworks.
    AP/David J. Phillip

  • Recent Slide Shows

  • Share on Twitter
  • Share on Facebook
  • Thumbnails
  • Fullscreen
  • 1 of 11

Comments

16 Comments

Comment Preview

Your name will appear as username

You may use these HTML tags and attributes: <a href=""> <b> <em> <strong> <i> <blockquote>