It's out! The Hardcover edition of my book, OUR TRIBAL FUTURE. https://t.co/QZ6m2yKgFR ...and here's a sample of reactions to the book... 👇

Just finished listening to @thewholeframe and @lucasmaddy’s Bitcoin Study Sessions on Our Tribal Future — and it absolutely made my week. It’s the most insightful take I’ve heard on the book so far — connecting our ancestral tribes to the merging networks of digital tribes.

Enjoying this book! Nice mini-lending library find

💤 Anthropologist and sleep expert David Samson @Primalprimate from @UofT Mississauga explains how measuring sleep patterns in remote tribes has helped him and his team compare circadian rhythms and report on how this affects our health. ▶️ https://t.co/kB2dzVWb7R #NSERCsupport

Lousy sleep? It’s quality, not quantity that may be your problem @UTM_Anthro prof David Samson (@Primalprimate) shares his latest research on sleeplessness with @cbcradio: Quirks & Quarks 😴 https://t.co/0RJjWwTFEI

Grateful to all the communities involved and @leela_mckinnon as co-author. For those interested in more details or the full paper see this open access: https://t.co/cFE2lqS2xG

Our paper suggests that we could be on the verge of a species level sleep enlightenment, if we improve chronohygiene while balancing the benefits of secure sleeping conditions.

Why it matters: Healthy sleep is not just about duration or efficiency—circadian alignment also matters. Aligning work schedules, lighting, and lifestyle with our natural rhythms could improve overall health. In fact, I believe circadian rhythms are upstream of sleep.

These results challenge the anxiety driving notion of a “sleep restriction epidemic” in industrial areas. While people there do sleep longer, they may suffer from circadian disruption, which can impact health, mood, and metabolism.

Key finding #2: However, non-industrial societies showed stronger circadian rhythms, while industrial societies had weaker circadian function—likely due to reduced natural light exposure and more artificial environments. This is a major cost of modern life.

Key finding #1: People in industrial societies actually slept longer and had more efficient sleep (spent more of their time in bed actually sleeping) than those in small-scale, non-industrial societies. We're talking about a whopping difference of 42 minutes more sleep!

We analyzed data from 54 populations, comparing sleep duration and efficiency. Then we measured circadian function in both non-industrial, small-scale and industrial, large-scale communities worldwide.

First, we tested two big ideas: 1. The Sleep Restriction Epidemic Hypothesis (tech & work demands in industrial societies reduce sleep). 2. The Circadian Mismatch Hypothesis (industrial environments misalign our circadian rhythms).

Excited to share our new research: “Are humans facing a sleep epidemic or enlightenment? Large-scale, industrial societies exhibit long, efficient sleep yet weak circadian function.” Let’s break down the key findings in this thread:

Ever wonder how turning the clocks back an hour affects working and companion dogs? Check out our new paper in @PLOSONE examining the impact of Daylight Saving Time (DST) change on sled and pet dogs’ morning activity 🐕🐾 https://t.co/f3JDM3Y4Q4

"In Our Tribal Future, a book that feels like an indispensable guide to living right now, evolutionary biologist David R. Samson explains how our biology led us to this place—and how we can leverage our tribal instincts to evolve beyond polarization." Check out this Christina

Epic conversation with @KnowleDJoficial on tribal identity and how it governs our coalitionary instincts. Thank you my friend 👊

Fashion can reflect our tribal instincts, as highlighted by @DrBenjaminWild's essay on "Our Tribal Future." It's a daily choice to signal our group identity. Emphasizing local (face-to-face) over tribal groups could revolutionize how we consume fashion and enhance wellbeing.

We're incentivized to leave the social networks within which we were born. It's hard to imagine a more pernicious form of mismatch.

Wonderful work on the relationship between sleep, health, and social threat -- and so proud to be a collaborator with the intrepid @eric_shattuck !

It was thrilling to speak on @CBC's IDEAS with @NahlahAyed. I feel this was the most important conversation I've had on #ourtribalfuture. For an hour, we delved deep into our species' past to gain insight into the present and peer into its future. Excerpt of discussion here: