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Associations between healthy dietary patterns and life expectancy remain unclear. Here, we reported the prospective associations of five dietary patterns with mortality and life expectancy in 103,649 UK Biobank participants. Over a median follow-up period of 10.6 years, 4314 total deaths were documented. Alternate Healthy Eating Index-2010, Alternate Mediterranean Diet (AMED), healthful Plant-based Diet Index (hPDI), Dietary Approaches to Stop Hypertension, and Diabetes Risk Reduction Diet...

The gradual decline in thymic function with age, known as age-related thymic involution, leads to reduced T cell production, thereby increasing the risk of infections and cancer susceptibility and leading to poor vaccine responses. Moreover, T cell defects were recently involved in the age-related loss of tissue integrity and function. Mechanistically, thymic involution is driven by several factors, including hormonal modifications and chronic inflammation, leading to functional changes in the...

Telomere shortening is a hallmark of aging and has been implicated in cardiovascular disease, but its mechanistic link to atrial fibrillation (AF) remains elusive. Using a high-throughput, single-gene-calibrated dot blot assay, we developed to quantify leukocyte telomere length (LTL). In age-stratified analyses, shorter LTL was associated with AF predominantly in individuals younger than 70 years. In telomerase-deficient (TERT^(-/-)) mice with telomere dysfunction, higher AF inducibility, atrial...

Senescent cells accumulate with age and after exposure to various stresses, contributing to chronic diseases and cancer, effects largely driven by the senescence-associated secretory phenotype (SASP). Recent evidence indicates that a subset of senescent cells exhibits immunogenic properties. However, the extent to which immunogenicity depends on the cell type and the senescence inducer remains unclear. In this study, we evaluated the immunogenic properties of various human cell types induced to...

Brain aging is marked by neuronal loss, synaptic deterioration, neuroinflammation, and proteinopathies, all of which contribute to cognitive decline. Although systemic suppression of growth hormone (GH)/insulin-like growth factor-1 (IGF-1) signaling has been shown to extend lifespan and enhance cognitive function, the specific role of GH signaling in adipose tissue during brain aging remains unclear. In this study, we used aged (18-24 months) adipose-specific GH receptor knockout (Ad-GHRKO) mice...

Microbial communities profoundly influence host aging, yet how natural genetic variation determines microbiota-driven longevity remains unclear. By screening root-derived bacterial isolates across genetically diverse Caenorhabditis elegans strains, we identified striking phenotypic heterogeneity, ranging from lifespan extension to accelerated aging. Combining classical genetic analysis, quantitative trait locus (QTL) mapping and CRISPR-Cas9 allelic recapitulation, we identify skn-1 (Nrf2) and...

Health department declines to renew Lindsey Criswell, head of arthritis institute, to another 5-year term

Last year’s mass firings of “probationary” federal workers sent researchers’ lives into turmoil

Agency’s attempt to overturn 2009 “endangerment finding” appears headed for Supreme Court