Tag: "adolescents" at biology news

Children who sleep more weigh less

...5 to 12 get 10 to 11 hours of sleep each night and adolescents get 8 to 9 hours, the study found that on weeknights, 7-year-olds slept on average less than 10 hours. By age 14, weekday sleep time fell to 8.5 hours. “Our results suggest that many American children are not sleeping enough,?said lead researcher ...

Misusing vitamin to foil drug test may be toxic; plus, it doesn't work

...ity of Pennsylvania reported on two adults and two adolescents who suffered toxic side effects from taking large ...dult patients suffered skin irritation, while both adolescents had potentially life-threatening reactions, including liver toxicity and hypoglycemia (low blood sug...

Sleep disturbances affect classroom performance

...urnal of Clinical Sleep Medicine (JCSM) finds that adolescents who experience sleep disturbances are more likely ...ies of previously-conducted studies all found that adolescents reporting inadequate sleep, irregular sleep patterns, and/or poor sleep quality do not perform as we...

'The eyes have it' -- Autism research yields surprising results

...ck said: "Previous findings show that children and adolescents with autism may have difficulty reading mental states from facial expressions but our results suggest that this is not due to an inability to interpret information from the eyes. "Surprisingly, autistic children seemed particularly reliant on the ...

Adolescent but not adult hamsters are more aggressive on low dose of fluoxetine

...icidal thoughts and behaviors in some children and adolescents on the drugs. Fluoxetine affects the regulation o...dren." The neuroscientists explain that because adolescents may have lower levels of serotonin than adults, there may not be enough of it in their systems for t...

New HIV study identifies high-risk subgroups of adolescents

...enter and Brown Medical School unveils profiles of adolescents at the greatest risk for HIV. Amongst a group of h...f the first studies to show that not all high-risk adolescents have the same types of risk behaviors, and therefore some are at higher risk for HIV than others. Th...

Psychotropic drug prescriptions for teens surge 250 percent over 7 year period

...han ever before, other prescription drugs taken by adolescents were trending down, said Thomas. For example, the use of antibiotics, the most widely prescribed drugs for teenagers, fell dramatically in response to widespread public educational campaigns about the dangers of antibiotic resistance due to overuse o...

Genetic and environmental influences on alcohol consumption among rhesus monkeys

...ing a period of 10 years when they were considered adolescents (between 2 and 4 years of age). All belonged to a single extended pedigree, and received identical early rearing backgrounds and subsequent treatments. Alcohol consumption was measured during unfettered and simultaneous access to both aspartame-swe...

Animal models show that anabolic steroids flip the adolescent brain's switch for aggression

...udes from the converging evidence. He hopes that adolescents don't take the ultimate recovery of the vasopressin system to mean it's OK to use the drugs. "It's our hope that people considering the use of these drugs weigh the long-term health risks and the serious potential for aggression and violence. Muscl...

Chernobyl: The true scale of the accident

...00 cases of thyroid cancer, mainly in children and adolescents at the time of the accident, have resulted from the accident's contamination and at least nine children died of thyroid cancer; however the survival rate among such cancer victims, judging from experience in Belarus, has been almost 99%. * Most ...

Environment, not genes, key in family relationships

...ture when it comes to family relationships between adolescents and their parents. Researchers from the University of Texas at Austin and George Washington University in Washington, D.C., used data on 674 families, each with a same-sex adolescent pair, to evaluate the factors that made up the relationships and i...

Canadian youth 4th highest in international obesity study

... the obesity scale in a new international study of adolescents from 34 countries, says co-author Dr. Ian Janssen, a professor in Queen's University's School of Physical & Health Education and Department of Community Health & Epidemiology. And sedentary behaviour ?like watching television ?was strongly c...

Bone Density Recovers After Teens Stop Injected Contraceptive

...searchers were concerned that DMPA use might place adolescents at higher risk for bone fracture or osteoporosis later in life. “This study shows that after adolescents stop using DMPA, their bone density can increase to levels comparable to those of other women in the...

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