The Baldwin Effect and Adult Hippocampal Neurogenesis

An Evolutionary Explanation for Lifelong Adult Hippocampal Neurogenesis in Humans and the Evolution of the Mental Immune System

"Adult hippocampal neurogenesis does not exist!" This was the retort I received after my lecture on the formation of new nerve cells in adults and their importance for mental health. The remark, quickly followed by the critic's reference to her scientific credentials, did not surprise me. Since its discovery, researchers who have demonstrated so-called "adult hippocampal neurogenesis" (AHN), study it, or work to educate the public about it have faced an unexpectedly frosty reception from some neuroscientists.

However, this moment made me reflect in a different way: While I have already explored this topic in depth in my comprehensive book publications, I realized the need for a concise article that clearly presents the essential arguments in an accessible way for everyone.

In this article, you will discover whether AHN is merely an evolutionary remnant without function, as critics suggest, or whether it actually plays a pivotal role in maintaining mental flexibility and adaptability well into old age. Even if you have read my books, you might find some fascinating new perspectives here that I have not previously addressed.

Dear reader,

This article is available exclusively to my paid subscribers for two weeks (until December 25) before being released to all readers, as is customary on my substack. The information is too important to limit, but as a gesture of thanks, I am giving my paid subscribers early access.

Michael Nehls