More explanation on "points" is needed.

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When you say "there are many points along the HPA axis leading to", what kinds of points do you mean? Do you mean neurons, signaling pathways, or the "targets" in your following sentence? Point is kind of abstract and obscure, please explain this word more, or change expressions.

Despite that, this an overall good edit. Almost all the statements are well cited from 2nd and up sources.