neuroAI

CHAPTER 6The Middle‐Aged Brain

Turns out, it's true. The midlife crisis is indeed a thing.

They say that every crisis is an opportunity. Most people in their forties would acknowledge that it is an opportunity for a lot of mischief to happen in life.

And neuroscience knows why.

In this chapter you will learn much about the “how and why” of the middle‐age mind, when life changes can be profound – and occasionally perplexing.

Drops in critical neurochemicals in the brain can trigger everything from a loss of sleep to a drive to a skydive. But they also harbinger positive needs – seeking human society and the amazing power of touch to hoist our spirits. Turns out that a hug is more than nice – it's a driver of greater well‐being.

You're about to be confronted with crystallized intelligence. Read on to find out why.

Dopamine Drops and Midlife Mischief

Neurotransmitters play a vital role in the communication between neurons in our brains, orchestrating the intricate symphony of thoughts, emotions, and actions that define our human experience. One neurotransmitter, dopamine, often referred to as the “feel‐good” chemical, is closely linked to our pleasure and reward circuitry. Engaging in new experiences, enjoying our favorite foods, and achieving success all contribute to the production of dopamine, resulting in a sense of elation and satisfaction (Lembke 2021).

However, research suggests that as we enter middle age, there is a decline in neurotransmitter levels, particularly dopamine, ...