Intelligence predicts health and mortality – but why? New research reveals some genes are implicated in both. Key facts: Intelligence test scores predict mortality, illnesses, and health behaviors. Higher scores indicate lower risk. Both intelligence and health/disease outcomes are highly polygenic – many genetic variants of small effect contribute. Genetic correlations exist between intelligence and …
Student cognitive abilities and college institutional factors both shape outcomes, but the historical evidence suggests student characteristics play an outsized role. Key Facts: In the research paper, student cognitive aptitude accounted for 41-47% of the variance in long-term salary outcomes. Institutional factors collectively accounted for more variance when entered first into models, suggesting both student …
Nutrition plays a major role in mental health, with diet quality closely linked to risk of common mental disorders like depression. This review comprehensively analyzes recent research on the impacts of nutrition on mental health and the use of nutritional interventions in treating psychiatric conditions. Key Facts: Poor diet is a major risk factor for …
A new study published in Frontiers in Psychiatry provides promising evidence that focused ultrasound stimulation of the prefrontal cortex can alleviate depressive behaviors in mice by suppressing inflammatory responses. Key facts: Researchers stimulated the prefrontal cortex of mice with focused ultrasound for 30 minutes. Mice treated with ultrasound showed less depressive behaviors compared to sham …
A series of studies suggest that repeated low doses of d-amphetamine can lead to a progressively greater behavioral response in some people. This phenomenon, known as “behavioral sensitization,” has been observed in animal models and hypothesized to contribute to addiction in humans. However, few controlled human studies have directly tested this idea. A new double-blind, …
Big picture: Psychoplastogens are a groundbreaking new class of psychoactive compounds that rapidly induce structural and functional changes in the brain, allowing pathological neural circuits to be rewired for therapeutic benefit. Key facts about psychoplastogens: Rapidly increase neural plasticity, unlike traditional antidepressants that work slowly. Produce fast-acting and sustained antidepressant effects in humans after a …
Chamomile, a popular herbal tea, has frequently been associated with benefits for relaxation and sleep. A new systematic review and meta-analysis published in Phytotherapy Research comprehensively analyzes the clinical research on chamomile for anxiety, insomnia, and sleep quality. Key facts from this study: 12 randomized controlled trials with 965 total patients were included. Trials tested …
For over half a century, neuroscientists operated under the assumption that the human brain contains around 100 billion neurons and over 1 trillion glial cells. This oft-cited “fact” made its way into textbooks and became common knowledge despite a lack of strong evidence. Recent advances in cell counting techniques have now debunked this myth, showing …
Albert Einstein is widely regarded as one of the greatest physicists and intellectuals in human history. His theories of relativity revolutionized our understanding of space, time, gravity and energy. Not surprisingly, there has been great interest in understanding if Einstein’s brain had unique anatomical features that could explain his extraordinary cognitive abilities. Several studies conducted …
A new study finds that adolescents who identify as multiracial face greater health and behavior risks compared to peers who identify with one race. Key findings show mixed-race youth have higher rates of health issues, substance use, suicidal thoughts, sexual activity, and school discipline problems. Researchers analyzed self-reported race data from over 80,000 7th-12th graders …
