Breaking News
March 19, 2019 - Use of synthetic psychedelic linked to improvements in depression and anxiety
March 19, 2019 - Knee Pain Not Tied to Activity Levels in Knee Osteoarthritis
March 19, 2019 - Study shows benefits of delayed cord clamping in healthy babies
March 19, 2019 - A cell’s “self-destruct” function could yield new therapies
March 19, 2019 - Latest advances and perspectives of all AI types used in pharmaceutical R&D
March 19, 2019 - Prophylactic cranial irradiation used as standard approach for patients with NSCLC
March 19, 2019 - Sugar-sweetened beverages may be linked with increased risk of cardiovascular mortality
March 19, 2019 - AHA News: Black Woman in Their 50s Face Especially High Stroke Risk
March 19, 2019 - Secrets of early life revealed from less than half a teaspoon of blood
March 19, 2019 - Immune cells engineered to tattle on suspicious cells in the body
March 19, 2019 - Heart attack patients who are taken to heart care centres directly survive longer
March 19, 2019 - IVF babies have increased in birthweight over the past 25 years, study reveals
March 19, 2019 - Study highlights the need for psychiatric care to be integrated into cancer treatment
March 19, 2019 - Testosterone treatment lowers recurrence rates in low-risk prostate cancer patients
March 19, 2019 - Caterpillars could hold the secret to new treatment for Osteoarthritis
March 19, 2019 - Parkinson’s treatment delivers a power-up to brain cell ‘batteries’
March 19, 2019 - Stanford launches new Institute for Human-Centered Artificial Intelligence
March 19, 2019 - Wireless earphones may cause cancer
March 18, 2019 - ACC/AHA guideline for prevention of cardiovascular disease released
March 18, 2019 - UTA nursing professor receives $6.575 million to attack musculoskeletal diseases
March 18, 2019 - Gene medication shows promise to treat spinal cord injuries
March 18, 2019 - First Human Study of “Robotic” RaniPill™ Capsule to Replace Injections Announced by Rani Therapeutics
March 18, 2019 - Food Allergy Testing: MedlinePlus Lab Test Information
March 18, 2019 - Altered brain activity patterns of Parkinson’s captured in mice
March 18, 2019 - Apple Heart Study demonstrates ability of wearable technology to detect atrial fibrillation | News Center
March 18, 2019 - Cardiovascular benefits of diabetes drug extend across a wide spectrum of patients, shows study
March 18, 2019 - Novel cardiac pump shows superior outcomes in patients with advanced heart failure
March 18, 2019 - U.S. FDA Grants Priority Review for Fedratinib New Drug Application in Myelofibrosis
March 18, 2019 - Living like a caveman won’t make you thin—but it might make you healthy
March 18, 2019 - Modified immune cells issue alert when detecting cancer in mice | News Center
March 18, 2019 - Dementia caregivers design robots for alleviating stress and increasing joyful moments
March 18, 2019 - VR technology could help improve balance in humans
March 18, 2019 - Study demonstrates effective way to slow progression of cerebrovascular disease in older adults
March 18, 2019 - Premature babies also have protective anti-viral antibodies
March 18, 2019 - Painkillers taken by pregnant mothers unlikely to cause asthma in the child
March 18, 2019 - Fibromyalgia can be reliably detected in blood samples
March 18, 2019 - Marijuana use has dropped among most teens after legalization
March 18, 2019 - Legacy Pharmaceutical Packaging, LLC Issues Voluntary Nationwide Recall of Losartan Potassium Tablets, USP, 25mg, 50mg, And 100mg Due to The Detection of Trace Amounts Of N-Nitroso N-Methyl 4-Amino Butyric Acid (NMBA) Impurity Found in The Active Pharmaceutical Ingredient (API)
March 18, 2019 - Researchers identify early home and family factors that contribute to obesity
March 18, 2019 - Fate and festivity: Match Day 2019
March 18, 2019 - Study finds TAVR to be as good as open-heart surgery for patients at low surgical risk
March 18, 2019 - EU-funded project is developing new tools for diagnosing cancer
March 18, 2019 - Gluten, lactose, food dyes in pills could be causing side effects finds study
March 18, 2019 - Taking painkillers during pregnancy is not responsible for asthma risk in children, study shows
March 18, 2019 - Prediagnosis Psychiatric Care Linked to Worse Cancer Mortality
March 18, 2019 - Paris hospital halts stool study after donor deluge
March 18, 2019 - Partial oral antibiotic therapy shows efficacy and safety in patients with infectious endocarditis
March 18, 2019 - Olympus improves access to science education through BioBus collaboration
March 18, 2019 - Depression screening does not improve quality of life in heart attack patients
March 18, 2019 - Echocardiography may aid in patient selection for TMVR
March 18, 2019 - Are ‘Inactive’ Ingredients in Your Drugs Really So Harmless?
March 18, 2019 - Wearable technology can safely identify atrial fibrillation
March 18, 2019 - Scientists tackle rare retinal disease in unique research project
March 18, 2019 - Death By A Thousand Clicks
March 18, 2019 - Absorbable, antibiotic-eluting envelope can reduce rate of cardiac device infections
March 18, 2019 - Hormonal treatment associated with depression in men with prostate cancer
March 18, 2019 - Porvair Sciences launches reinforced 96-well deep round microplate
March 18, 2019 - Simplified catheter ablation could slash waiting lists for atrial fibrillation patients
March 18, 2019 - BFR therapy as part of rehabilitation following ACL surgery may slow bone loss
March 18, 2019 - A human model to test implants for cataract surgery
March 18, 2019 - New risk adjustment model could reduce financial penalty for safety net hospitals
March 18, 2019 - NHS cancer patients’ wait to start treatment worrying
March 18, 2019 - Inventiva Announces Results from Phase IIb Clinical Trial with Lanifibranor in Systemic Sclerosis
March 18, 2019 - Cologuard
March 18, 2019 - Researchers find evidence of prenatal environment tuning genomic imprinting
March 18, 2019 - Dolomite Bio launches novel Nadia product family for single-cell research
March 18, 2019 - Intellipharmaceutics Announces Resubmission of New Drug Application to the U.S. FDA for its Oxycodone ER
March 18, 2019 - Excessive gestational weight gain tied to maternal morbidity
March 18, 2019 - RCEM issues position statement on metrics to supplement four-hour standard target
March 17, 2019 - Noncontrast Brain MRI Effective for Monitoring Multiple Sclerosis
March 17, 2019 - Brain region plays key role in regulation of parenting behavior, study finds
March 17, 2019 - Natural speed limit on DNA replication sets pace for life’s first steps
March 17, 2019 - New research reveals overlooked impact of herbicide glyphosate on the environment
March 17, 2019 - Molecular patterns could help predict relapse risk in breast cancer patients
March 17, 2019 - Study confirms sensitivity of microbiological cultures for detecting cholera
March 17, 2019 - Scientists Spot Clues to Predicting Breast Cancer’s Return
March 17, 2019 - Scientists identify gene that keeps PTSD-like behavior at bay in female mice
March 17, 2019 - New method would allow doctors to detect earliest stages of cancers in the lymph nodes
March 17, 2019 - Cholesterol protein discovery raises hope for smarter drugs
March 17, 2019 - New insect medium delivers high viable cell density growth and protein yield
New Evidence Pot May Harm the Teen Brain

New Evidence Pot May Harm the Teen Brain

image_pdfDownload PDFimage_print

TUESDAY, Oct. 30, 2018 — Teens who stop smoking pot can think and learn better afterward, even if they are only light users, a new study reports.

Compared to teenagers and young adults who continued using marijuana, those who abstained for a month displayed a “modest but reliable improvement in their ability to learn,” said lead researcher Randi Schuster.

“Most of this improvement surprisingly happens rather quickly, within the first week of abstinence,” added Schuster, director of neuropsychology at Massachusetts General Hospital’s Center for Addiction Medicine.

The results show that kids need to be kept from using pot, Schuster said. This is a growing concern as recreational marijuana becomes legal in more U.S. states, she added.

“As we as a country move toward widespread legalization, we should pay attention to smart prevention programming for children,” Schuster said.

The researchers cited a 2016 survey that found almost 14 percent of middle and high school students had used pot in the prior month. It also showed daily use doubling between eighth and 12th grades.

Maturation of critical parts of the brain occurs in adolescence, and regular pot use in those years may cause more harm than later use, the researchers said in background notes.

Marijuana legalization proponents countered that the new study supports their contention that the effects of pot are temporary.

“These conclusions are consistent with those of prior studies finding that cannabis exposure is not likely to be associated with any sort of permanent adverse impact on the brain or cognitive performance,” said Paul Armentano, deputy director of NORML.

“These findings dispute the long-standing ‘stoner-stupid’ stereotype and should help to assuage fears that cannabis’ acute effects on behavior may persist long after drug ingestion, or that they may pose greater potential risks to the developing brain,” Armentano said.

For their study, Schuster and her colleagues asked two-thirds of a group of 88 marijuana users ages 16 to 25 to drop pot for a month.

The Boston-area participants were not all heavy users, but did use regularly. “We have kids using a minimum of one day a week or more,” Schuster said.

Urine tests revealed that 9 out of 10 participants did follow through on their promise to stop using pot for the study period.

Once a week, the young people took part in computerized brain games that tested their attention and memory, to see if stopping their pot use would help improve their brain function.

The computer tests showed that memory — specifically the ability to learn and recall new information — improved only among those who stopped using cannabis. The improvement occurred largely during the first week.

The study only showed an association between quitting pot and better learning ability, not a direct cause-and-effect relationship. Still, specialists are taking note of the findings.

“Cannabis use impacts learning and memory, and this study showed improvement in these domains after quitting,” said Dr. Scott Krakower, assistant unit chief of psychiatry at Zucker Hillside Hospital in Glen Oaks, N.Y.

“This research may motivate practitioners to encourage their patients to quit using marijuana and maintain abstinence,” Krakower said.

However, quitting marijuana did not appear to affect the participants’ ability to pay attention. Both groups performed similarly in that area.

Future studies will test whether this memory recovery brings marijuana quitters back to full function by comparing them with teens who’ve never used in the first place, Schuster said.

“What we don’t know is, by that one week are they back to the levels of their non-using peers, or is there a deficit that’s still measurable?” Schuster said.

The study appears in the Oct. 30 Journal of Clinical Psychiatry.

More information

The U.S. National Institute on Drug Abuse has more about marijuana’s long-term effects on the brain.

© 2018 HealthDay. All rights reserved.

Posted: October 2018

Tagged with:

About author

Related Articles