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Too much coffee may weaken bones, study finds

3 days 12 hours ago
Following nearly 10,000 older women for 10 years, researchers found that tea drinking was associated with slightly higher hip bone density. Moderate coffee consumption did not appear harmful, but drinking more than five cups a day was linked to lower bone density. The findings suggest tea may offer a small bone-health boost, while excessive coffee could carry some drawbacks.

Obesity leaves a lasting memory in immune cells

3 days 16 hours ago
Obesity appears to leave a molecular imprint on key immune cells that may persist for 5 to 10 years after weight loss. This long-lasting “obesity memory” could help explain why some obesity-related health risks remain elevated even after body weight returns to normal.

Mindfulness may lower blood pressure in just 8 weeks

4 days 5 hours ago
Mindfulness, gratitude, and optimism training may improve blood pressure, inflammation, and other heart-health measures within just eight to 12 weeks. The strongest programs paired daily practice with regular reinforcement, suggesting that improving psychological well-being could become another tool for protecting cardiovascular health.

Reaching 90 without dementia doesn’t mean you’re in the clear

4 days 6 hours ago
A study of people over 90 found that dementia risk remains strongly shaped by sex, race and genetics, with women and black participants facing notably higher risks. Intriguingly, some people stayed cognitively healthy despite carrying major risk factors, potentially offering clues to how the brain can resist dementia deep into old age.

Enhancing the longevity of lithium-manganese-rich layered oxides by promoting oxygen redox reversibility

4 days 8 hours ago
To enable widespread adoption of electric vehicles, positive-electrode materials must fulfill high energy, long-term stability, and earth-abundant composition within large-format architectures. Lithium-manganese-rich layered oxides show promise through high energy enabled by oxygen redox chemistry and abundant manganese content while minimizing cobalt content. However, oxygen redox irreversibility and gas evolution present challenges in its adoption to large-format cells. Here, we reveal how...
Munsoo Song

Anisotropy-mediated stress regulation in Mn-substituted VOPO<sub>4</sub> enables aqueous zinc batteries with long cycle life

4 days 8 hours ago
The structural integrity of layered VOPO(4) frameworks critically determines their electrochemical performance in aqueous zinc-ion batteries, yet the highly ordered stacking of VOPO(4) renders it susceptible to lattice stress accumulation and chemo-mechanical degradation during cycling, causing rapid capacity fading and a shortened battery lifespan. Herein, we show a strategy to alleviate these limitations through partial metal substitution in the VOPO(4) lattice, enabling the modulation of...
Zhenjie Yao

The gut microbiota and gut-brain axis in Alzheimer's disease: From pathogenesis to treatment

4 days 8 hours ago
Alzheimer's disease (AD) is a progressive neurodegenerative disorder whose pathological course involves amyloid-β (Aβ) deposition, tau abnormalities, neuroinflammation, and neurovascular dysfunction. Interest in the microbiota-gut-brain axis does not arise because gut dysbiosis has been established as an independent initiating cause of sporadic AD, but because this axis connects modifiable peripheral factors-including diet, medication, ageing, and intestinal physiology-with barrier homeostasis,...
Jingyi Wang

Physical function moderates the relationship between white matter characteristics and gait variability during uneven terrain walking in aging

4 days 8 hours ago
Navigating uneven terrain poses a significant challenge for older adults, often resulting in falls. Identifying the neural correlates of walking on uneven terrain might help understand the mechanisms of age-related mobility decline. We examined age and physical function group differences in white matter microstructure and tested whether associations between white matter measures and uneven-terrain walking behavior differed between these groups. Twenty-two young adults (22.45 ± 2.58 years) and 86...
Seda Tasci

The gut microbiota and gut-brain axis in Alzheimer's disease: From pathogenesis to treatment

4 days 8 hours ago
Alzheimer's disease (AD) is a progressive neurodegenerative disorder whose pathological course involves amyloid-β (Aβ) deposition, tau abnormalities, neuroinflammation, and neurovascular dysfunction. Interest in the microbiota-gut-brain axis does not arise because gut dysbiosis has been established as an independent initiating cause of sporadic AD, but because this axis connects modifiable peripheral factors-including diet, medication, ageing, and intestinal physiology-with barrier homeostasis,...
Jingyi Wang

Targeting senescence-associated biomarkers: Emerging strategies for anti-ageing therapy

4 days 8 hours ago
Ageing research has undergone a paradigm shift from descriptive theories to a mechanistic understanding grounded in the interconnected biological processes. This work synthesizes the current landscape of ageing research, emphasizing the critical role of biomarkers in translating mechanistic insights into clinical application. Biomarkers, ranging from molecular and cellular markers to functional and imaging parameters, serve as essential tools for quantifying biological age, assessing the...
Zhe Qin

The force-producing fraction: muscle quality as a therapeutic target in sarcopenia and a design framework for trials that can test it

4 days 8 hours ago
Sarcopenia has consensus criteria on three continents and an all-cause mortality hazard ratio near 1.6, yet no drug is approved for the primary age-related condition and agents that reliably enlarge muscle have not improved the strength and gait-speed endpoints that define it. We approach this translational failure from the biology rather than the pipeline. Ageing degrades four properties of skeletal muscle that jointly determine force production and are each druggable in principle: innervation,...
Ju Hun Oh