預期壽命計算機
A rough estimate of your life expectancy from simple lifestyle adjustments - and how many years, months, and weeks you might have left.
估算是怎麼算出來的
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:
- 吸菸:−10 年(目前吸菸)、−5 年(已戒菸)
- 重度飲酒:−4 年;中度:−0.5 年
- 規律運動(每週 150 分鐘以上):+3 年
- 肥胖(BMI 30 以上):−3 年;過重:−1 年;過輕:−2 年
- 糖尿病:−6 年
- 高等教育:+2 年
- 已婚/長期伴侶:+1.5 年
- 較高收入(前四分之一):+2 年
- 自評健康狀況(極佳):+2 年;(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.
為什麼這很重要
知道自己大致的時間範圍,即使只是粗略的估計,也能讓人想得更清楚。Left 正是圍繞這個想法而打造:你剩下的時間是有限的,看清楚它,就是有意識地運用它的第一步。預期壽命計算機給你一個數字作為參考,至於怎麼運用這個數字,由你決定。
限制
族群層級的平均值無法預測個人的結果。遺傳、醫療資源的取得、居住地點,以及無數其他因素,這裡都沒有納入。請把它當作粗略的參考基準,而不是預測。若涉及健康方面的決定,請諮詢醫療專業人員。
在人生日曆中,把你剩下的年份看成一張網格。
開始留意真正重要的事。
在 iPhone 上下載 Left,看見自己剩下的時間和期待的日子,養成想持續的習慣,成為更好的自己。
掃描或在 App Store 搜尋「Left」。