[firethief]

> For example, for most social mammals, being higher status protects you more from stressful life events, so that you less often invoke the standard mammal stress response. By not spending on stress, you body invests more in growth and immunity. So higher status primates are less sick, and live longer.

Does data support modern humans having lower stress levels than similar mammals? (Or, for that matter, that higher-status mammals have lower stress?)

How would the proposed adaptation not be equally beneficial to lower-status mammals?

The strongest argument for this hypothesis seems to be its explanatory power; it smells like grasping at straws