预期寿命计算器
A rough estimate of your life expectancy from simple lifestyle adjustments - and how many years, months, and weeks you might have left.
这个估算是怎么算的
The calculator starts from the remaining life expectancy at your current age, taken from the World Health Organization's global life tables for 2019 (the Global Health Observatory indicator "ex - expectation of life at age x", for males and females, interpolated between the table's age bands). Because it is a global average, people in high-income countries will typically see a higher figure in real life, and people in lower-income countries a lower one. It then applies rounded adjustments for each lifestyle and health factor, based on the general direction of published research:
- 吸烟:−10 年(目前吸烟),−5 年(已戒烟)
- 大量饮酒:−4 年;适量饮酒:−0.5 年
- 规律运动(每周 ≥150 分钟):+3 年
- 肥胖(BMI 30 以上):−3 年;超重:−1 年;偏瘦:−2 年
- 糖尿病:−6 年
- 较高学历:+2 年
- 已婚或有长期伴侣:+1.5 年
- 较高收入(前四分之一):+2 年
- 自评健康(极好):+2 年;(较差):−5 年
The adjustments are added together and scaled down as you get older, so they never exceed the years you have left; this is a simplification. Beyond age 85 the table is extended with a simple estimate, and the result never drops below a small floor for someone who is alive today.
Sources for the direction and rough size of the adjustments: Jha et al., New England Journal of Medicine 2013 (smoking); Wood et al., The Lancet 2018 (alcohol); Moore et al., PLoS Medicine 2012 (physical activity); Prospective Studies Collaboration, The Lancet 2009 (BMI); Emerging Risk Factors Collaboration, New England Journal of Medicine 2011 (diabetes); Chetty et al., JAMA 2016 (income). The adjustments for education, relationship status and self-rated health are simplified assumptions.
为什么这很重要
大致了解自己还有多少时间,哪怕只是粗略的估算,也很有启发。Left 正是围绕这个想法打造的:你拥有的时间是有限的,看清它,是有意识地使用它的第一步。预期寿命计算器给你一个可以参考的数字,而你如何对待这个数字,由你自己决定。
局限性
人群层面的平均值无法预测个人的结果。遗传、医疗资源的可及性、居住地,以及无数其他因素,都没有被计入这里。请把它当作一个粗略的参照,而不是预测。涉及健康的决定,请咨询专业医生。
在人生日历中,把你剩下的年份看成一张网格。
开始留意真正重要的事。
把 Left 下载到你的 iPhone,看见剩余的时间,期待你盼望的日子,建立想要坚持的习惯,成为更好的自己。
扫描二维码,或在 App Store 搜索「Left」。