These findings are specific to the Minnesota Adolescent Community Cohort study, a longitudinal telephone survey of youth less than 18 years old. The probability of an adolescent as young as 12 years of age buying cigarettes from a commercial source in the past month decreased significantly from 36% at baseline to 22% after three years.
In sharp contrast, the probability of their obtaining cigarettes from a social source in the previous month during the same time period increased significantly from 54% to 76%. “Although the use of social sources for cigarettes may increase when the commercial supply of cigarettes is restricted, the total amount of youth smoking seems to be reduced by increased commercial restrictions” comments Dr. Widome, the corresponding author.
These results are important because they indicate a decreasing access to commercial sources of cigarettes. It is well established that, apart from illegally buying their tobacco from commercial sources, underage smokers also obtain their tobacco from social sources like friends, relatives, older adolescents, and adults. For 14 to 18 year old minors in the US, the usual sources of cigarettes are a store (23.5%) or vending machine (1.1%); giving someone else money to buy them (29.9%); borrowing them from someone else (30.4%); stealing them (4.4%); or getting them in some other way (10.7%), which includes via the internet.
The good news in Widome et al.’s findings is that adolescents who obtained cigarettes from social sources were less likely to become heavy smokers compared to youth who bought their cigarettes from commercial sources.
David Evans | alfa
Study relating to materials testing Detecting damages in non-magnetic steel through magnetism
23.07.2018 | Technische Universität Kaiserslautern
Innovative genetic tests for children with developmental disorders and epilepsy
11.07.2018 | Christian-Albrechts-Universität zu Kiel
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
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