Genetics

Amount of mitochondrial DNA predicts frailty and mortality

New research from The Johns Hopkins University suggests that the amount of mitochondrial DNA (mtDNA) found in peoples' blood directly relates to how frail they are medically. This DNA may prove to be a useful predictor of ...

Surgery

How old is too old for surgery, and why?

Many of us will have been in situations with older loved ones where a doctor says surgery is too risky given the patient's advanced age. Why is it surgery becomes risky in the elderly, and is it based on chronological age ...

Medical research

Leaving its mark: How frailty impacts the blood

Globally, human society is aging. A side-effect of this is that age-related disorders, such as frailty, are becoming increasingly common. Frailty includes not only physical disabilities, but also a decline in cognitive function ...

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