Women with a history of childhood trauma have higher levels of a natural antioxidant called bilirubin, which might be their body’s way of fighting back against long-term stress.

The study looked at stress markers in new moms who were mistreated as kids, but it didn’t check bilirubin at all — so it can’t say whether bilirubin goes up. It did find signs of body damage from stress, not protection, which doesn’t match the claim.