How a Cellular Calcium Glitch Speeds Up Aging in Mice
Based on: Ameliorating calcium homeostasis improves longevity and healthspan in progeroid and naturally aged mice.
When cells lose control of their calcium balance, it sets off a chain reaction that triggers DNA damage and inflammation tied to aging. In mice, an old antidepressant called mianserin calmed this calcium chaos. It improved several signs of aging and lengthened their lives. This points to calcium control as a possible target for slowing aging.
Key Insight
This study suggests calcium balance inside cells may be a future target for aging research.
Original Paper
Xiang W, Hu Q, Sun P, Wu X, Jiang H, Qu M, Li L, Wang Y, Wang Z, Liu X, Ma J, Zhu D, Li H, Wang Y, Jiao Y, Huang B, Lu J, Cong X, Li W, Zhang Y
Related Studies
Weak Grip Strength Linked to Higher Risk of Pneumonia and Sepsis
In over 400,000 UK adults, weaker handgrip strength was tied to higher rates of pneumonia, UTIs, skin infections, and sepsis. Each 5-kg drop in grip raised infection risk by about 5-10%. The link was strongest in underweight people, and inflammation-related proteins like GDF15 partly explained it.
Fitness Apps and Wearables May Boost Steps in Older Adults
Looking at 26 trials with over 4,000 older adults, digital tools like wearables and apps helped people walk about 800 more steps per day and get 46 more minutes of moderate exercise per week. But they didn't significantly cut sitting time or boost light activity. Standalone wearables and tools paired with human coaching worked best.
Why Omega-3s May Help Aging Kidneys: It Comes Down to One Receptor
Scientists found that omega-3 fatty acids slowed kidney aging and fibrosis in mice, but only when a specific receptor called FFAR4 was working. This receptor is less active in older people and in those with chronic kidney disease. When researchers removed FFAR4 in mice, kidney aging got worse, which may explain why omega-3 trials sometimes give mixed results.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.
