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People who suffer from sleep disturbances are at major risk for obesity, diabetes, and coronary artery disease, according to new research from the Perelman School of Medicine at the University of Pennsylvania. For the first time in such a large and diverse sample, analyzing the data of over 130,000 people, the new research also indicates that general sleep disturbance (difficulty falling asleep, staying asleep, and/or sleeping too much) may play a role in the development of cardiovascular and metabolic disorders. The study is published online ahead of print in the Journal of Sleep Research.

More than 15 percent of Norwegian teenagers ages 15 to 16 reported “mental distress,” or symptoms of depression and anxiety, with significantly more girls reporting distress than boys, according to a new study in the Journal of Adolescent Health. Girls with mental distress were also more likely than their male counterparts to be prescribed psychotropic drugs — those that alter chemical levels in the brain, affecting behavior and mood.

In the first study of its kind, researchers at Queens College and Mount Sinai School of Medicine have found that low socioeconomic status (SES) and maternal gestational diabetes together may cause a 14-fold increased risk of attention deficit hyperactivity disorder (ADHD) in six year olds. The data are published in the January issue of theArchives of Pediatrics and Adolescent Medicine, one of the JAMA/Archives journals.

Different ingredients in marijuana appear to affect regions of the brain differently during brain processing functions involving responses to certain visual stimuli and tasks, according to a report in the January issue of Archives of General Psychiatry, one of the JAMA/Archives journals. Sagnik Bhattacharyya, M.B.B.S., M.D., Ph.D, at the Institute of Psychiatry, King’s College in London, and colleagues studied 15 healthy men, who were occasional marijuana users, to examine the effects of Δ9-tetrahydrocannabinol (Δ9-THC) and cannabidiol (CBD) on regional brain function during salience processing, which is how people perceive things around them.

Cigarette and alcohol use by eighth, 10th and 12th-graders are at their lowest point since the Monitoring the Future (MTF) survey began polling teenagers in 1975, according to this year’s survey results. However, this positive news is tempered by a slowing rate of decline in teen smoking as well as continued high rates of abuse of other tobacco products (e.g., hookahs, small cigars, smokeless tobacco), marijuana, and prescription drugs. The survey results, announced today during a news conference at the National Press Club, appear to show that more teens continue to abuse marijuana than cigarettes; and alcohol is still the drug of choice among all three age groups queried.

Children exposed to family violence show the same pattern of activity in their brains as soldiers exposed to combat, new research has shown. In the first functional MRI brain scan study to investigate the impact of physical abuse and domestic violence on children, scientists at UCL in collaboration with the Anna Freud Centre, found that exposure to family violence was associated with increased brain activity in two specific brain areas (the anterior insula and the amygdala) when children viewed pictures of angry faces.

In childhood, rituals like regular schedules for meal, bath, and bed times are a healthy part of behavioral development. But combined with oral and tactile sensitivities, such as discomfort at the dentist or irritation caused by specific fabrics, these rituals could be an early warning sign of adult Obsessive Compulsive Disorder (OCD).

Depression may have more far-reaching consequences than previously believed. Recent data suggests that individuals who suffer from a mood disorder could be twice as likely to have a heart attack compared to individuals who are not depressed. This process has been poorly understood — until now. A new study led by Concordia University has found that depressed individuals have a slower recovery time after exercise compared to those who are non-depressed.

A survey of police officers indicated that about 40 percent have a sleep disorder, which was associated with an increased risk of adverse health, safety and performance outcomes, according to a study in the December 21 issue of JAMA. Sleep disorders, such as obstructive sleep apnea, insomnia, and shift work disorder, affect 50 to 70 million U.S. residents. Most are undiagnosed and remain untreated. The study was conducted by Shantha M. W. Rajaratnam, Ph.D., of Brigham and Women’s Hospital, Boston, and colleagues. Included in this report is a video summary of the study results.

A Florida State University clinical psychologist has identified factors that could cause some women with post-traumatic stress disorder (PTSD) to have chronic, persistent symptoms while others recover naturally over time. At the conclusion of a two-year study of women from across the nation, Assistant Professor Jesse R. Cougle found that those with PTSD who reported a history of rape or severe childhood physical abuse were more likely to suffer chronic PTSD symptoms.