I like to lay that largely on work environments. Physical labor and physical stress, long hours, wear and tear on body parts, more likelihood of disabling injur

I like to lay that largely on work environments. Physical labor and physical stress, long hours, wear and tear on body parts, more likelihood of disabling injuries & inflammation. Throw in better knowledge of good nutrition (less consumption of toxins) and the importance of exercise - inactivity is a slow killer. Finally, psychology ... more to live for, and the means to enjoy it.