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Late-life depressive symptoms have been associated with structural brain changes and cognitive impairment, but prior studies have typically examined individual markers of brain aging in isolation. This study examined the associations between depressive symptoms and multiple markers of brain aging in a population-based cohort of community-dwelling older adults. Baseline data from 2,746 participants with complete data on depressive symptoms, neuroimaging measures, cognitive assessment, and...

Cognitive impairment is highly prevalent among patients with end-stage renal disease (ESRD), particularly those undergoing dialysis, and is associated with poor clinical outcomes and reduced quality of life. Emerging evidence suggests that Klotho, an anti-aging protein predominantly expressed in the kidney, plays a critical role in the pathophysiology of uremia-related cognitive dysfunction. This review summarizes current clinical and experimental evidence regarding Klotho deficiency in dialysis...

Scientists have discovered that creatine may strengthen one of the immune system's most important cancer-fighting pathways by energizing dendritic cells that activate killer T cells. The promising results could eventually help make immunotherapy more effective, but they have not yet been tested in human patients.

Intermittent fasting helped people lose as much weight as calorie restriction, but without the same feeling of constantly controlling their food intake. Researchers say that difference could make fasting a more sustainable option for people who struggle with traditional diets.

A new once-daily weight-loss pill called orforglipron delivered better weight loss and blood sugar improvements than the leading oral semaglutide in a major clinical trial. The tablet could offer a more convenient alternative to injectable drugs like Ozempic and Wegovy because it doesn't require refrigeration or special timing with meals. It's also cheaper to manufacture, which could expand access globally.

Scientists at the University of Illinois Chicago have turned an unlikely source into a potential new weapon against cancer: bacteria that naturally live inside tumors. They developed a peptide called aurB, inspired by a bacterial protein, that infiltrates cancer cells and effectively cuts off their energy supply by targeting the mitochondria—the cells’ power plants.

Almost half of the takeaway meals tested contained more salt than advertised, with some dishes delivering nearly twice the recommended daily limit in a single serving. Surprisingly, classic fish and chips ranked among the lowest-salt options, while pasta, pizza, and curries were often the saltiest.

Alzheimer's disease (AD) remains a progressive neurodegenerative disorder without effective disease-modifying therapies. Epidemiological evidence indicates that regular resistance exercise substantially reduces AD risk, an effect potentially mediated by insulin-like growth factor-1 (IGF-1). However, the complete mechanistic pathway from exercise-induced peripheral IGF-1 synthesis to its central neuroprotective actions has not been systematically integrated. This review provides a comprehensive...

Bridge-like lipid transfer proteins (BLTPs) play fundamental roles in cellular lipid redistribution between organellar membranes. They comprise bridge domains spanning organelles at contact sites that allow lipids to transit through the cytosol between adjacent membranes. The assembly of BLTPs into complexes with adaptor proteins enables lipid transfer. To address the mechanisms underlying the assembly and regulation of BLTP complexes, we used cryo-EM to resolve the structure of one such BLTP,...

There is growing evidence that long-acting mimetics of the gut-derived incretin hormones GLP-1 and GIP act as disease-modifying therapies for Alzheimer's disease (AD). Here, we temporally characterize the efficacy of the approved incretin receptor agonists semaglutide, a GLP-1R agonist, and tirzepatide, a GLP-1R/GIPR co-agonist, in preventing AD progression. In 5xFAD mice treated for 2 or 4 months, both incretin therapies lower body weight and improve glucose tolerance, yet neither compound...

CONCLUSIONS: Conclusions are limited by substantial heterogeneity in the assessment of frailty, sarcopenia, AD biomarkers, and a lack of longitudinal data. Future studies are needed that include longitudinal analyses, consensus in AD biomarker, frailty and sarcopenia assessments, and incorporation of novel AD biomarkers, in particular tau and neuroinflammation, to help clarify these relationships.

Clinical trial design (CTD) is a time-consuming process that requires substantial domain expertise. Large-scale real-world data (RWD), such as electronic health records (EHR), encodes practice-based evidence that is of tremendous value to CTD. In recent years, many machine learning methods have been developed to extract such real-world evidence (RWE) from the RWD to inform CTD, but they still need to be communicated with the domain experts extensively in an iterative manner to be further refined...

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Fibroblast growth factor 21 (FGF21) is a stress-induced endocrine hormone that regulates metabolism. Grandl et al. show that FGF21, through its receptor β-klotho (KLB), enhances sulfide signaling and hydrogen sulfide production, strengthening the unfolded protein response and integrated stress response to promote stress resilience, metabolic adaptation, and potentially healthy aging.

The stomach harbors a complex microbial niche, yet the persistence and disease relevance of its core microbiota remain unclear. Using full-length 16S and ITS sequencing of 255 pediatric samples, this study identifies 11 core bacterial genera organized into two antagonistic communities, CST1A and CST1B. CST1A is enriched in non-ulcer controls, whereas CST1B is associated with gastroduodenal disease, with limited fungal involvement. Stratified analyses show that Helicobacter pylori infection...

Dietary strategies that support long-term cognitive health and resilience against neurodegenerative diseases are important with aging and senescence. Brain aging is a consequence of intricate biological changes that occur over the lifespan. The process of aging involves the decline in metabolic and physiologic functions, and changes in anatomical structure. However, our lifestyle practices, including diets and nutrient intakes, physical exercise, sleep quality, and cognitive activity can help to...

Vascular aging is a fundamental contributor to the development of chronic diseases and has emerged as a critical focus in biomedical research. With the rapid advancement of artificial intelligence (AI), new opportunities have arisen to enhance the precision and efficiency of vascular aging studies. AI techniques, particularly those applied to large-scale multi-omics and medical imaging data, enable the identification of novel biomarkers and the development of robust models to quantify the rate...