I’m 26. For men in my country (the US) life expectancy at 65 is about another 17 years right now, so someone turning 65 can expect to live until about 82. However is there any legitimate way to predict life expectancy changes over the course of my life? In the last 20 years cardiovascular disease rates are down by a third, and I have read alzheimers will be cured by the time I’m in my 60s. Cancer rates keep going down. In the last 20 years many advances have been made in cardiovascular disease and cancer. So I’m wondering if there is any legitimate way to predict changes in life expectancy (something like Moore’s law for computers) or is it just guesswork since we don’t know how many, what kinds or how fast medical advances will come?