ScienceDaily
Scientists discover why Ozempic and Wegovy weight loss eventually plateaus
New NIH research has cracked open a key mystery behind GLP-1 drugs like Ozempic and Wegovy, revealing that semaglutide triggers distinct responses within individual appetite-regulating brain cells β explaining why results vary so dramatically from person to person. The findings also point toward a potential mechanism for extending the drugs' effectiveness, a breakthrough that could help patients break through frustrating weight-loss plateaus. For the millions relying on these medications, the research lays groundwork for more targeted, longer-lasting treatments.
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Scientists discover hidden liver switch that cuts harmful cholesterol
Researchers at UT Southwestern have identified a protein called HELZ2 that acts as a master switch in the liver, suppressing production of apoB β the core component of artery-clogging LDL particles. By silencing the genetic instructions for apoB, HELZ2 directly limits how much harmful cholesterol enters the bloodstream. The discovery opens a potentially new therapeutic target for reducing cardiovascular disease risk.
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Graphene quantum dots show promise in targeting Parkinson's-related protein clumping
Graphene quantum dots are emerging as a potential therapeutic tool against synucleinopathies by directly targeting the protein aggregation process that drives diseases like Parkinson's and multiple system atrophy. Unlike existing treatments, which only address symptoms, this nanomaterial-based approach aims to interrupt the formation of toxic Ξ±-synuclein clumps at the source. If the science holds, it could mark a meaningful shift toward disease-modifying therapies for conditions that currently have no cure.
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Beet juice lowers blood pressure in older adults in just 2 weeks
Concentrated beetroot juice consumed twice daily for two weeks significantly lowered blood pressure in older adults, according to the largest study of its kind. The effect appears tied to how nitrates in the juice reshape the oral microbiome, producing compounds that support cardiovascular function. Notably, younger adults in the study saw no such benefit, suggesting age plays a key role in how the body responds.
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Tropical cyclones now release ocean carbon, but warming could flip role by 2035
Tropical cyclones currently cause oceans to release more carbon than they absorb, acting as a net source of CO2 rather than a sink during storm events. But a new study warns that rising ocean temperatures could reverse this dynamic by 2035, turning cyclones into drivers of increased carbon absorption. The shift would complicate global carbon cycle models and add another layer of uncertainty to long-term climate projections.
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