MIT Built a Light-Based Detector for "Zombie" Cells. Used Alone, Its Light Readings Barely Beat Chance in Lung Tissue
A new Nature Aging study found a fat-related chemical signal that marks aging cells in mice without destroying the tissue. The tool is promising for research, but scanning one square millimeter currently needs about 30 hours and has not been tried in people.
Transplanted Hearts Took On the Biological Age of Their New Bodies, in Mice and in 11 Patients
A Harvard preprint posted in September found old donor hearts looked younger in young recipients, and young hearts looked older in old ones. It could widen the donor pool, but the human evidence is thin and has not been peer-reviewed.
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Hearing Aids Did Not Stop Memory Problems From Becoming Dementia in a 703-Person Trial, but One in Seven Wearers Tested Normal Again
The CHOICE trial, published September 28, is the first large randomized test of hearing aids in people who already have mild memory decline. Dementia rates were similar in both groups, while far more hearing aid users saw their memory scores return to normal.
Your Immune Cells Seem to Age in Two Bursts, Around 40 and After 60, and Women's and Men's Follow Different Paths
A new analysis of 3.8 million blood immune cells from 1,828 healthy people finds immune aging is not a smooth slope. Separate immune aging clocks for men and women also beat a single shared clock.
A Fat Molecule Inside Muscle Mitochondria Fades With Age, and Restoring It Brought Wasting Mice Back From the Brink
A Nature Aging study published September 29 links the loss of cardiolipin to the odd way muscles change as we age. The team also traced the molecular switch behind one of aging muscle's strangest changes.
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