Hi Balboa. This is a great question and one that strikes at the heart of perhaps the biggest controversy related to prostate cancer - the reliability of PSA, potential for over-treatment vs. not treating those in need, and life-expectancy. As noted in this article from Harvard Med, "American Urological Association (AUA) age guidelines: The AUA does not recommend routine PSA screening for men 70 or older or with a life expectancy of less than 10 to 15 years:" https://www.health.harvard.edu/mens-health/when-is-it-time-to-stop-being-checked-for-prostate-cancer#:~:text=American%20Urological%20Association%20(AUA)%20age,for%20every%201%2C000%20men%20screened. Note what it says about age and life expectancy. One of the problems for this rule is that life expectancy is increasing. I'm sure the average 70 year old today is hoping to make it past 80 and the mere fact that things such as prostate cancer are not being treated in older men is holding life expectancy from increasing further. Hopefully new tests for not only PCa, but also grade, such as the urinary ones, will be able to lead to better decision options on moving forward with treatment of PCa. Best, Richard (ProstateCancer.net Team)