my lovely wife is pregnant and I want to ensure she’s in the best possible condition for her and the baby, i know folic acid is important, are there any other supiments worth considering?

The reason I ask is that I answered a question from a young woman who was complaining of anxiety and moodiness, and I recommended some nutrition solution she could try – and I got a thumbs down! Now, I know, it was only one, no big deal. But I really was quite nice, and even if someone didn’t agree, I didn’t think there was any reason to thumbs down my answer.
So, I wanted to know if there was some kind of distaste in the mental health community for nutrition supplements or answers of this kind, or if it was just a fluke.