"Women Are Furious About This Research." - Darby Saxbe

The gist

1. Saxbe says fathers who spend more time caregiving show about a 1% loss of gray matter volume, similar to changes seen in mothers.
2. Testosterone naturally drops in hands-on dads, which Saxbe links to fewer risky behaviors and better health, but supplementing may work against this.
3. Around 10% of new fathers experience postpartum depression, and when one parent struggles emotionally the other tends to follow due to stress contagion.
4. Saxbe says modern nuclear families lack the extended kin support humans evolved with, which helps explain high rates of postpartum depression today.