Navigation Links
Marijuana 'gateway' theory strengthened by study of twins

A new study of 311 sets of same-sex twins in which only one twin had smoked marijuana before age 17 has bolstered the fiercely debated "gateway theory" that pot can lead to harder drugs. The study included 136 sets of identical twins who shared the same genetic makeup and all the participants were 30 years of age, on an average, when they were asked about their teenage drug use. The researchers found that those who were early marijuana smokers// were five times more likely than their twins to move on to harder drugs. They were about twice as likely to use opiates, which include heroin, and five times more likely to use hallucinogens, which include LSD. They found that about 46 percent of the early marijuana users reported that they later abused or became dependent on marijuana, and 43 percent had become dependent on alcohol. The study also reported that among 48 per cent of the early marijuana users, the most commonly used harder drugs were cocaine and other stimulants as compared to 26 percent of the non-early marijuana users. Hallucinogens were the second most common, used by 35 percent of the early marijuana twins versus 18 percent of the others.

The study, whose lead researcher was Michael Lynskey, was reported in the Journal of the American Medical Association. Lynskey and other colleagues agreed that the study had several limitations like the fact that even identical twins do not share the same environment during adolescence and the study had relied on participants' reporting of their own experiences. Lynskey also added that though it is implied often that using marijuana changes one's brain or makes one crave for other drugs, the study did not show how marijuana could lead to harder drugs. He also said that there are a number of other potential mechanisms, including access to drugs, willingness to break the law and likelihood of engaging in risk-taking behavior that might lure one to harder drugs.


'"/>




Page: 1

Related medicine news :

1. Marijuana Use Could Result In Psychosis
2. Wife May Determine Husband’s Marijuana Use
3. E-Mail Affects Brain More Than Marijuana
4. Marijuana-Derived Drug Promises Hope In Treating Bladder Infection
5. Adolescent Marijuana Smokers Face Risk Of Developing Schizophrenia
6. Rhode Island legalizes use and possession of Marijuana
7. Smoking Marijuana Increases The Risk Of Bladder Cancer
8. Marijuana Compound Offers Hope In Diabetic Retinopathy Prevention
9. Marijuana Causes The Brain To Lose Its Ability
10. Cancer Patient to Appeal to SC, Demanding Right to Use Marijuana
11. Fertility Treatment Can Be Affected By The Use Of Marijuana
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/25/2016)... , ... June 25, 2016 , ... "With 30 hand-drawn ... specific project," said Christina Austin - CEO of Pixel Film Studios. , ProHand ... all within Final Cut Pro X . Simply select a ProHand generator and ...
(Date:6/25/2016)... Oklahoma City, Oklahoma (PRWEB) , ... June 25, ... ... to helping both athletes and non-athletes recover from injury. Recently, he has implemented ... for the Oklahoma City area —Johnson is one of the first doctors to ...
(Date:6/24/2016)... ... 2016 , ... A recent article published June 14 on E ... goes on to state that individuals are now more comfortable seeking to undergo not ... as calf and cheek reduction. The Los Angeles area medical group, Beverly Hills Physicians ...
(Date:6/24/2016)... ... June 24, 2016 , ... Marcy was in a crisis. Her son James, eight, ... at his family verbally and physically. , “When something upset him, he couldn’t control his ... it. He would throw rocks at my other children and say he was going to ...
(Date:6/24/2016)... ... June 24, 2016 , ... Dr. Amanda ... orthodontic treatment. Dr. Cheng has extensive experience with all areas of orthodontics, including ... accelerated osteogenic orthodontics. , Micro-osteoperforation is a revolutionary adjunct to orthodontic treatment. ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)...  Collagen Matrix, Inc., ("Collagen Matrix") the driving ... collagen and mineral based medical devices for tissue ... Messer has joined the company as Vice ... growing portfolio of oral surgery, neurosurgery, orthopaedic and ... the Collagen Matrix executive team as an accomplished ...
(Date:6/24/2016)... June 24, 2016 The Academy of Managed ... recommendations that would allow biopharmaceutical companies to more ... that make formulary and coverage decisions, a move that ... new medicines. The recommendations address restrictions in ... on the drug label, a prohibition that hinders decision ...
(Date:6/24/2016)... --  Pulmatrix, Inc ., (NASDAQ: PULM ), ... today that it was added to the Russell Microcap ... set of U.S. and global equity indexes on June ... for Pulmatrix," said Chief Executive Officer Robert Clarke ... in developing drugs for crucial unmet medical needs, and ...
Breaking Medicine Technology: