You also get unreliable age reporting. At least in some of the supposedly long-lived villages outside of civilization (lika Hunza), it has been shown that when westerners come their and try to study people's age - what they get in response is not the calendar age, but something akin to "social status". If you have a big family and many achievements, they say they are 80. If you haven't achieved that much yet - they call them 60.
