Squeak, can you clarify what “everyone has PPD” means? PPD is a real illness post pregnancy but not all women get it. Most women get the “baby blues” which is very different from PPD. Many women get PPD because they are overworked, overwhelmed and have had little support to recover.
Post partum psychosis is totally different and only effects those who had c-sections (IIRC but I think thats true).