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Neuroscience News (EUA)
Em 2026: 0 notícias
Desde 1995: 53 notícias
Saliva Test Could Help Detect Depression and Schizophrenia
Publicado em 29 de outubro de 2025
Summary: Scientists have developed a portable biosensor that can detect levels of BDNF, a protein linked to mental health conditions such as depression, schizophrenia, and bipolar disorder. The flexible, low-cost device analyzes a drop of saliva in under three minutes, offering a fast, affordable, and noninvasive diagnostic tool.
Because low BDNF levels are associated with depression and cognitive decline, the test could help clinicians detect and monitor disorders earlier. With an estimated [...]
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New Genetic Link to OCD Found
Publicado em 18 junho 2025Summary: In a groundbreaking study, researchers have linked rare “de novo” genetic mutations—copy number variants (CNVs)—to pediatric obsessive-compulsive disorder (OCD). Using whole exome sequencing on nearly 1,000 families, they found significantly more of these mutations in children with OCD than in healthy peers. The findings help explain why OCD may arise even without inherited genetic risk and suggest the disorder has deeper roots in spontaneous genetic changes. [...]ver notícia -
Insomnia Isn’t Just About Sleep,Your Personality Plays a Role
Publicado em 19 maio 2025Summary: Certain personality traits significantly influence the risk of developing insomnia. People with high levels of neuroticism—a trait linked to emotional instability—were much more likely to experience sleep disturbances. In contrast, individuals scoring higher in openness showed lower levels of insomnia, suggesting a protective effect. Anxiety was found to be the key mechanism mediating the relationship between neuroticism and insomnia, while depression was not a [...]ver notícia -
Midlife Hearing Loss Linked to Faster Brain Aging
Publicado em 07 maio 2025Summary: A Brazilian study of over 800 adults in their 50s shows that hearing loss is strongly linked to accelerated cognitive decline. Participants with hearing loss experienced faster reductions in memory, language, and executive function over eight years. Researchers identified two key mechanisms: reduced brain stimulation from hearing loss and increased social isolation, both known risk factors for dementia. These findings emphasize the need for early detection and intervention to [...]ver notícia -
Ultra-Processed Foods Disrupt Infant Gut Health
Publicado em 06 maio 2025Summary: A Brazilian study of 728 infants found that ultra-processed foods can harm gut microbiota diversity, with stronger effects in children who were not breastfed. Breastfed infants had higher levels of beneficial Bifidobacterium, while non-breastfed children consuming processed products showed elevated levels of bacteria linked to obesity and gastrointestinal issues. The study also found that breastfeeding can help buffer the harmful effects of ultra-processed foods on gut health. These [...]ver notícia -
Ultraprocessed Foods Linked to Rising Premature Deaths Worldwide
Publicado em 29 abril 2025Summary: A new study across eight countries shows that higher consumption of ultraprocessed foods (UPFs) is significantly linked to increased premature deaths. Researchers found that each 10% rise in UPFs’ share of total energy intake raises all-cause mortality risk by 3%. Countries with the highest UPF consumption, like the U.S., see up to 14% of premature deaths attributed to these foods. The findings highlight the urgent need for global policies promoting healthier, minimally [...]ver notícia -
Maternal childhood trauma linked to rapid weight gain in baby boys
Publicado em 24 abril 2025Summary: A new study reveals that maternal childhood trauma—such as neglect or abuse—can trigger rapid weight gain in male infants as early as the first two months of life. Researchers found that boys born to mothers who experienced early-life adversity gained significantly more weight per day than average, despite being full-term, healthy, and mostly breastfed. The findings suggest early metabolic alterations linked to intergenerational trauma, with the male placenta being more [...]ver notícia -
Disrupted Myelin Protein Implicated in Schizophrenia
Publicado em 18 abril 2025Summary: A new study has identified the protein hnRNP A1 as a key player in the production and maintenance of myelin, the fatty sheath that insulates nerve fibers in the brain. Myelin loss is common in disorders like multiple sclerosis and schizophrenia, and this research shows that hnRNP A1 disruptions can impair myelination at the molecular level, even before behavioral symptoms appear. Using a rodent model, scientists induced and later reversed demyelination to track the effects on [...]ver notícia -
Heavy Drinking Linked to Brain Lesions and Cognitive Decline Risk
Publicado em 10 abril 2025Summary: Consuming eight or more alcoholic drinks per week is associated with brain lesions known as hyaline arteriolosclerosis, which can impair memory and thinking. These lesions are signs of damaged blood vessels that restrict blood flow and gradually harm brain tissue. Researchers also found that heavy and former heavy drinkers had higher odds of tau tangles, a biomarker linked to Alzheimer’s disease. Former drinkers showed reduced brain mass and worse cognitive performance, and [...]ver notícia -
Weight Training May Slow Cognitive Decline and Protect Aging Brains
Publicado em 02 abril 2025Summary: A new study shows that weight training not only boosts physical strength but also protects the brains of older adults with mild cognitive impairment. After six months of twice-weekly resistance training, participants showed memory improvements and protection against brain atrophy in regions linked to Alzheimer’s disease. MRI scans revealed preserved white matter integrity and better brain health, while the control group showed decline. These findings suggest that weight [...]ver notícia