Almost always, genes are about potentials and vulnerabilities rather than about determinism.

If you care about your longevity and health, be a socially affiliated baboon who is better than high-ranking ones at walking away from provocations.

Essentially, we humans live well enough and long enough, and are smart enough, to generate all sorts of stressful events purely in our heads.

We’ve evolved to be smart enough to make ourselves sick.

What happened in the milliseconds before a behavior to cause it? That's in the neurobiological realm.

Digestion is quickly shut down during stress…The parasympathetic nervous system, perfect for all that calm, vegetative physiology, normally mediates the actions of digestion. Along comes stress: turn off parasympathetic, turn on the sympathetic, and forget about digestion.

We are just another primate but a very confused, malleable one.