Key points from article :
Research on 1,500 women aged 64 to 95.
Those who spent many hours sitting and exercised for less than 40 minutes a day had cells that were biologically eight years older.
Telomere length is one indicator of biological age – shortened telomeres have been linked with an increased risk of cardiovascular disease, diabetes and major cancers.
Women wore an accelerometer for seven days to track their movements.
The study was published in the American Journal of Epidemiology.
