As part of that study, the individuals had undergone repeated measurements including body mass index (BMI) over more than three decades.

作为这项研究的一部分，每个人必须反复测量包括身体的体重指数(BMI)超过三十年。

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But the study did account for a variety of factors, including age, body mass index and education.

不过，这项研究的确已经考虑到了很多因素，例如年龄、人群密集度和受教育程度等。

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The findings held even after the researchers took into account other factors that could affect telomere length, including the women's chronological age, body mass index and smoking habits.

即便研究人员们考虑了其它能影响端粒长度的因素（比如她们的实际年龄、身体质量指数和吸烟习惯），这些发现依旧站得住脚。

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Although the researchers took into account a wide range of extenuating factors, including diet and exercise regimens, smoking, alcohol consumption, body mass index, and marital status, it's possible that people who drink coffee differ from the rest of the population in as-yet unidentified ways that make them less vulnerable to disease and early death.

CNN: Coffee drinking linked to longer life

The researchers found that sitting was associated with a higher death risk after controlling for factors including age, gender, smoking status, physical activity, education, body mass index, as well as living in an urban or city environment.

FORBES: Why Sitting Increases Your Risk of Dying Sooner