Arguably, I think exercise should be #1. EDIT: Assuming they are ordered, otherwise ignore me. Cancer is about 20% of your chance of death. Intuitively exercis

Arguably, I think exercise should be #1. EDIT: Assuming they are ordered, otherwise ignore me. Cancer is about 20% of your chance of death. Intuitively exercise helps with many things on this list. The other (roughly) 25% is cardiovascular/cerebrovascular events. For that, the best thing you can do is exercise. https://news.ycombinator.com/item?id=18264323 https://news.ycombinator.com/item?id=18264323 Then there's COVID (12), alzheimer + diabetes (6) and a smattering of "other causes" https://www.cdc.gov/nchs/data/databriefs/db492-tables.pdf#4 https://www.cdc.gov/nchs/data/databriefs/db492-tables.pdf#4 For a less trite list with really solid scientific backing, try the book Outlive.