
Genetic Link to Depression Identified
Many studies have shown a heritable component to depressive disorders, but a specific cause has not been identified. Recently, scientists in two separate studies located a specific chromosomal region that is associated with depression.Both studies were recently published in the American Journal of Psychiatry. One study was led by a team at Washington University in St. Louis and evaluated families who had diagnoses of major depressive disorder (MDD).
Hold It! Stop Making Impulsive Decisions
To pee or not to pee? A new study published in Psychological Science says you may want to make important life decisions before finding that restroom. The study, conducted by a team in the Netherlands, evaluated how having a full bladder affected the ability to make decisions that required self-control. First, volunteers in the study drank varying amounts of water. After 40 minutes (roughly the time it takes the bladder to fill), the volunteers were asked to make decisions choosing between short- and long-term benefits. For example, in one decision, participants were asked to choose between receiving $16 tomorrow or $30 in 35 days.
Maternal Relationship Reduces Violence and Improves Intelligence
There is no substitute for a good mother, and a mother’s influence is one of the most powerful forces in the lives of young children. Now, research shows that a healthy, playful relationship between a child and a mother leads to adult children with higher intelligence and less involvement in violence.
Alzheimer’s Disease and Insulin Resistance
For years, researchers have noted a connection between conditions of impaired insulin use and regulation, such as obesity and type 2 diabetes, and Alzheimer’s Disease (AD), but the mechanism of association has not been well-defined. Now, researchers report that proteins that influence the development and progression of AD are suppressed by insulin, encouraging new treatment strategies for AD.
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