Women who spend too much time sitting down speed up the ageing process. Sitting for more than ten hours a day gives women a ’biological age’ up to eight years older than it should be, according to a new study.
The researchers, who tracked the movements of 1,481 women over the age of 64, found a strong link between a sedentary lifestyle and the premature ageing of cells in the body. Women who were more sedentary had shorter and more frayed telomeres, which scientists use to calculate ’biological age’.
Telomeres naturally shorten with age, but health and lifestyle factors － such as smoking and obesity － can accelerate the process. Shortened telomeres are linked with heart disease, diabetes and cancer. However, just half an hour of moderate exercise might undo the damage.
"We found that women who sat longer did not have shorter telomere length if they exercised for at least 30 minutes a day," said lead author Aladdin Shadyab.
sedentary：形容詞，久坐的，坐慣的。例句：A sedentary person, no matter how busy he is, should take time out for exercise.（一個坐久的人，無論他有多忙，都應該抽出時間運動。）
premature：形容詞，早熟的，過早的。例句：Babies born before completion of week 37 are premature.（嬰兒在滿37週以前出生算是早產。）
fray：動詞，使…磨損，使…緊張。例句：His shirt was frayed at the neck.（他的襯衫領口磨損。）