Depression

Young adults who get fewer than eight hours of sleep per night have greater risks of psychological distress, a combination of high levels of depressive and anxious symptoms, according to a study in the Sept. 1 issue of the journal SLEEP.

Depression is actually defined by specific clinical symptoms such as sadness, difficulty to experience pleasure, sleep problems etc., present for at least two weeks, with impairment of psychosocial functioning. These symptoms guide the physician to make a diagnosis and to select antidepressant treatment such as drugs or psychotherapy.

Anger, depression, and helplessness are the main psychological responses being seen in response to the catastrophic Deepwater Horizon oil spill in the Gulf of Mexico, and they are likely to have long-lasting effects, according to an interview in Ecopsychology, a peer-reviewed, online journal published by Mary Ann Liebert, Inc. (www.liebertpub.com). The interview is available free online at www.liebertpub.com/eco

While some teenagers may puff on cigarettes to 'self-medicate' against the blues, scientists at the University of Toronto and the University of Montreal have found that smoking may actually increase depressive symptoms in some adolescents. Published in the journal Addictive Behaviors, the findings are part of the long-term Nicotine Dependence in Teens (NDIT) study based at the University of Montreal Hospital Research Centre.

Clinical depression and anxiety during pregnancy results in smaller babies that are more likely to die in infancy, according to new research published in the open access journal BMC Public Health. The study, which focused on women living in rural Bangladesh, provides the first finding of its kind in a non-Western population. The research indicates that mental health issues are likely to be a primary contributor to infant mortality and poor child health, above poverty, malnutrition or low socio-economic status.

Tai Chi, a low impact martial art, has been associated with reduced stress, anxiety and depression, and enhanced mood, in both healthy people and those with chronic conditions. A systematic review of the subject, published in the open access journal BMC Complementary and Alternative Medicine, found that although Tai Chi does appear to have positive psychological effects, more high quality, randomized trials are needed.

Yale researchers have discovered how a novel anti-depressant can take effect in hours, rather than the weeks or months usually required for most drugs currently on the market. The findings, described in the August 20 issue of the journal Science, should speed development of a safe and easy-to-administer form of the anti-depressant ketamine, which has already proven remarkably effective in treating severely depressed patients.

By stimulating certain areas of the brain, scientists can alleviate the effects of disorders such as depression or Parkinson's disease. That's the good news. But because controlling that stimulation currently lacks precision, over-stimulation is a serious concern — losing some of its therapeutic benefits for the patient over time.

• The children of alcohol-dependent (AD) individuals have a greater risk of developing a psychiatric illness.

• New findings indicate that gender of AD parents and the gender of their children interact to influence the nature and extent of psychopathology in the children.

• This influence appeared strongest in the female parent-female child pairing.