Is mental illness nature or nurture? The science might surprise you.

Added: 2026-05-06

[00:00:00]you know, genetics are a big part of who we are and behavioral genetics is this section of psychology that has been really underplayed because you know, in the past eugenicists like the Nazis used genetics to commit atrocities and kill lots of people.

[00:00:20]Uh, but that doesn't mean genetics don't affect us. So, there's a really interesting studies on um the genetic causes of mental illness.

[00:00:28]So, you know, borderline personality disorder uh, people think it's caused by CPTSD, you know, complex lots of little traumas over childhood, but it's 70% heritable. And narcissistic personality disorder is something like 60% heritable and anxiety is something like 50% heritable.

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