The bumpy trajectory of human aging may have a tipping point as we enter our twilight years, a new study has found.

Past the age of around 75, our bodies can no longer easily recover from injury or illness – a sharp decline in resilience that comes with a corresponding rise in the risk of dying, according to researchers at Dalhousie University in Canada.

Their model looks at aging as a balance between damage and repair , with the breakdown of that balance marking the point of no return into frailty.

This finding could help researchers and clinicians better understand and plan for people's health care needs as they approach this tipping point.

"We find that natural aging dynamics are non-trivial and include a tipping point near age 75 where robustness and resilience become insuffici

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