All the research I'm aware of suggests that it was common (assuming you survived childhood) to live into your late 40s or beyond up to 180,000 years ago. That'

All the research I'm aware of suggests that it was common (assuming you survived childhood) to live into your late 40s or beyond up to 180,000 years ago. That's an average, so it's very likely that some would have lived into their 60s or even 70s. As a relatively modern (and admittedly exceptionally) datum, Emperor Justinian I lived to 83. Life expectancy dropped from it's pre-historical peak as we started living in larger communities due to disease (more communicable due to proximity and more prevalent due to greater quantities of local rot/sewage/permanent structures where e.g., rats can live), warfare (more prevalent due to desirable wealth amassed in cities, more deadly due to improved weaponry, the tendency to raze cities, etc.), the worldwide rise of slaves as the motive power of industry (both the taking and use of which reduced life expectancies), and food insecurity (more likely vs sparsely populated, nomadic hunter gatherer groups due to crop failures, warfare, and taxation by sometimes multiple layers of ruling class). The improvements in these categories, plus the role of modern medicine in reducing infant and maternal mortality, are largely responsible for our current increases in average life span, in my casually informed understanding.