City Cast Las Vegas logo

Author Michael Easter on How Your Ancient Drives Shape Your Life

Posted on September 26, 2023   |   Updated on September 30, 2025
Scott Dickensheets

Scott Dickensheets

Photo of the cover of the book "Scarcity Brain."

Michael Easter's new books comes out today. (Courtesy)

Author and UNLV journalism professor Michael Easter is an expert on self-improvement. His first book, 2021’s “The Comfort Crisis,” showed how to unlock the power of discomfort to upgrade your life. His new book, published today, is “Scarcity Brain: Fix Your Craving Mindset & Rewire Your Habits to Thrive with Enough.”

What is 'scarcity brain'?

Everyone knows everything is fine in moderation. But why are we so bad at it? Why don't we ever feel like we have enough? Most behaviors we do in excess now helped our ancient ancestors survive. But we still have our ancient brains that push us into more food, stuff, status-seeking, information binging, etc.

One big revelation from the book is that I discovered what I call the scarcity loop. It's a three-part behavior loop that evolved to help us obsessively repeat behaviors that kept us alive, like finding food. But it's now being applied to technologies that can hurt us. It was actually revived right here in Las Vegas, in the 1980s, in slot machines. But it's now what powers social media, dating apps, online gaming, sports betting, online streaming, and even our food system.

How does it play out now?

Humans evolved in a world where what we needed to survive was scarce. So we're built to crave. But we now have an abundance of everything we're built to crave. And we still keep accumulating. Anthropologists call this an "evolutionary mismatch."

For example, even a couple hundred years ago, the average American owned a handful of clothes and tools. Now the average home has 10,000-plus items and most homes are in some form of debt. Food used to be scarce — now we throw out about one-third of our food, and 40% of Americans are obese. A person in one day today takes in more information than a person 700 years ago took in during their entire life.

That has changed us, oftentimes not for the better.

What can we do about it?

In “Scarcity Brain” I identify three key ways to get out of the scarcity loop. It's the only scientific way to stop any bad habit. And this is very important. As a person who's studied physical and mental health my entire life, I've noticed that people want to develop good new habits. But the problem is that it's our bad habits that hold us back most. Fix your worst habits and your life improves instantly.

Share article

Hey Las Vegas

Stay connected to City Cast Las Vegas and get ready to join the local conversation.

Can't subscribe? Turn off your ad blocker and try again.

The latest in Las Vegas

Las Vegas, ExplainedOctober 9

Take This Week's Las Vegas News Trivia Quiz

Ready for a challenge? Take our weekly quiz, based on the news and stories of this past week in Las Vegas.

A close-up of the black-and-white logo on a Metro Police car
Keep It LocalOctober 8

Meet Toni James, the Drag Queen Marrying Couples at Las Vegas Pride

Las Vegas drag superstar Toni James has performed since 1988. Now, as a wedding officiant, he’ll marry couples onstage at the 2026 Las Ve...

Drag performer Toni James sings into a vintage-style microphone onstage, wearing a white halter dress, a pearl necklace, and a flower in his hair.
Keep It LocalOctober 8

Where To Spend Your Pride Dollars Year Round

Support queer Las Vegas beyond Pride with four LGBTQ+-owned and community-centered businesses for books, boba, movement, and nightlife.

Two people stand inside The Analog Dope Store surrounded by shelves of books and vinyl records and a large hand-drawn chalkboard mural.
Keep It LocalOctober 1

Your Guide to Halloween Shopping in Las Vegas

From $75 costume rentals and theatrical makeup to haunted tea and real skulls, these four locally owned Vegas shops have your spooky seas...

Four framed illustrations on aged, parchment-like fabric depicting dark fantasy creatures in a medieval manuscript style, propped against a rough stone wall and surrounded by flickering votive candles — prints from the “Thirteen Ghosts” collection available at Halloween Emporium and Haunted Tea Room.
Keep It LocalOctober 1

A Halloween Costume With a Backstage Pass

Go big this Halloween at On Stage Essentials, where pros behind looks for Lady Gaga and 'Absinthe' help beginners add plumes, sparkle, an...

A dramatic costume from On Stage Essentials in Las Vegas displayed on a mannequin, featuring a blue-and-silver sequined corset bodice with black ribbon detailing, white tulle ruffles at the shoulders, waist and wrists, and a matching tulle neck ruffle.
Las Vegas' BestSeptember 30

Your Guide to Las Vegas in October 2026

Discover what to do in Las Vegas this October! From the Hobie Wave sailing championship to the Las Vegas Book Festival and Gilcrease Orch...

Mulit-colored catamarans on the water.
Las Vegas' BestSeptember 30

The Best Halloween Bars, Attractions, and Festivals in Las Vegas

Haunted houses? Shows? Spooky pop-up bars? We've got all that, plus anything else to make Halloween complete in Las Vegas.

A scary monster looks around a corner in a haunted house.
Las Vegas, ExplainedSeptember 30

Just How Doomed Is the Train to California?

Once a surefire promise for the 2028 Olympics, Brightline West faces skyrocketing $21B costs, stalled federal loans, and a sister-company...

A row of yellow, black and silver trains in a train yard.