The number of times a woman gives birth has an effect on physical aging. Women who give birth less than, or more than, three or four times age faster after menopause.
Altered microRNA levels in a person's saliva can help determine if they have experienced a recent concussion. The new saliva test is a cheap and non-invasive method for the identification of concussion.
People who reported chronic insomnia or sleep duration of fewer than six hours were twice as likely to experience cognitive impairment compared to those who experienced good sleeping patterns. The association was stronger for those with coexisting cardiometabolic conditions.
Study reveals those with narcissistic personality traits may be more politically active. Those with high levels of narcissism were more likely to contact politicians, sign petitions, and donate to political causes. Previous studies linked narcissistic traits to behaviors harmful to functioning democracies, including conflict and civic strife.
Cortical thickness and regional brain connectivity pay an equally important role in linking brain and behavior.
Experiencing stress made people more likely to give emotional support as well as receive support from others.
Is empathy really on the decline, as a recent study suggests? Researchers investigate how and why people chose to be empathetic, or to avoid empathy, in their daily lives.
Among older women, lower levels of hydration were associated with lower scores on tests designed to measure attention, working memory, and motor speed. Researchers also found over-hydration may have a detrimental effect on cognitive function.