Good post.

I believe that to include nutrition is even more effective.

Add on the microbiome, and I think most mental issues will be handeled.

Interestingly, most substances that can show an effect on having a preventive effect on dementia and alzheimers, are also showing, in other studies, to have an effect on both depression and cognitive abilities.

From this, it is absolutely possible that birth depression acctually is nutrition deficiancy, as the body priorities the foetus prior to the mother as we can see in nature in many other species.

Which again can be the reason why the first born usually is the most capable amongst siblings.