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ScienceDaily: Mind & Brain News |
| Sleep disorders tally $94.9 billion in health care costs each year Posted: 07 May 2021 01:00 PM PDT Sleep disorders are associated with significantly higher rates of health care utilization including more doctors visits and prescriptions, placing an additional $94.9 billion in costs each year to the U.S. Health care system. |
| Damage to white matter is linked to worse cognitive outcomes after brain injury Posted: 07 May 2021 10:09 AM PDT A new study challenges the idea that gray matter (the neurons that form the cerebral cortex) is more important than white matter (the myelin covered axons that physically connect neuronal regions) when it comes to cognitive health and function. The findings may help neurologists better predict the long-term effects of strokes and other forms of traumatic brain injury. |
| Breaching the blood-brain barrier to deliver precious payloads Posted: 07 May 2021 09:17 AM PDT RNA-based drugs may change the standard of care for many diseases, making personalized medicine a reality. So far these cost-effective, easy-to-manufacture drugs haven't been very useful in treating brain tumors and other brain disease. But a team has shown that a combination of ultrasound and RNA-loaded nanoparticles can temporarily open the protective blood-brain barrier, allowing the delivery of potent medicine to brain tumors. |
| How bullying and obesity can affect girls' and boys' mental health Posted: 07 May 2021 08:20 AM PDT Depressive symptoms are more common in teenage girls than in their male peers. However, boys' mental health appears to be affected more if they suffer from obesity. Irrespective of gender, bullying is a considerably greater risk factor than overweight for developing depressive symptoms. |
| How we retrieve our knowledge about the world Posted: 07 May 2021 08:20 AM PDT In order to find our way in the world, we classify it into concepts, such as 'telephone'. Until now, it was unclear how the brain retrieves these when we only encounter the word and don't perceive the objects directly. Scientists have now developed a model of how the brain processes abstract knowledge. They found that depending on which features one concentrates on, the corresponding brain regions go into action. |
| Thin and brittle bones strongly linked to women's heart disease risk Posted: 06 May 2021 03:33 PM PDT Thin and brittle bones are strongly linked to women's heart disease risk, with thinning of the lower (lumbar) spine, top of the thigh bone (femoral neck), and hip especially predictive of a heightened heart attack and stroke risk. |
| Why do some neurons degenerate and die in Alzheimer's disease, but not others? Posted: 06 May 2021 01:36 PM PDT Researchers have uncovered molecular clues that help explain what makes some neurons more susceptible than others in Alzheimer's disease. The scientists present evidence that neurons with high levels of the protein apolipoprotein E (apoE) are more sensitive to degeneration, and that this susceptibility is linked to apoE's regulation of immune-response molecules within neurons. |
| Feeling younger buffers older adults from stress, protects against health decline Posted: 06 May 2021 01:36 PM PDT People who feel younger have a greater sense of well-being, better cognitive functioning, less inflammation, lower risk of hospitalization and even live longer than their older-feeling peers. A study suggests one potential reason for the link between subjective age and health: Feeling younger could help buffer middle-aged and older adults against the damaging effects of stress. |
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