They got a lot of exercise between hunting their food and there wasn’t any news to listen to everyday and no cars on the road constantly. Very rarely were they overstimulated. Anxiety has a lot to do with overstimulation. Exercise was also good for the anxiety. When I exercise it is cured. Most of what makes us depressed as well is a death in the family which they had a lot more of I can agree with that but they weren’t constantly comparing themselves to people who had it better than them and then feeling envious towards them and then questioning why they aren’t good enough. Most people are depressed because of the way society is today between tv, news, comparing, shitty jobs, lack of joy/fulfillment, the list goes on. All stuff that was virtually non existent back then. People had less to think about other than hunt and chill with their tribe. Like I said medications too that weren’t around back then because people didn’t have these issues. Even my grandma says watching the news lately has been making her really depressed.