Key Highlights
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A new review links dysfunction in the brain’s wake-promoting systems (like norepinephrine and orexin) to the early stages of Alzheimer’s disease, even before memory problems appear. This dysfunction disrupts sleep and impairs the brain’s nightly cleaning process, potentially creating a vicious cycle that accelerates the buildup of toxic proteins.
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A study in rats found that repeated stress changes how males and females eat when faced with a new situation, with females showing a more pronounced change in their feeding behavior. This highlights the importance of considering biological sex when studying how stress affects the brain and behavior, which could lead to more personalized approaches for stress-related eating disorders.
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A large study found that higher levels of certain proteins in the blood that are linked to brain cell damage (neurodegeneration) are associated with a greater risk of death from any cause, and specifically from dementia. This suggests these simple blood tests could one day help identify people at the highest risk, allowing for earlier monitoring and intervention.
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A commentary explains that POEMS syndrome, a rare nerve disorder, is often misdiagnosed because its early symptoms like fatigue, numbness, and hormone problems are common and seem unrelated. Raising awareness among doctors about this “constellation” of symptoms is crucial to prevent delays in diagnosing this treatable condition.
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A clinical trial showed that integrating a specific type of talk therapy (exposure-based cognitive behavioral therapy) into intensive community mental health teams significantly reduced anxiety and improved quality of life for people with severe mental illnesses like schizophrenia. This demonstrates that effective psychological treatments can be successfully delivered outside of traditional therapy offices, reaching those who need them most.
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