I've also started reading this book after one of your recommendations, and I agree that it would be beneficial for people who have never questioned what sleep is and how it works. But if someone is interested in sleep (has basic understanding of what is jet-lag, circadian rhythms, melatonin, REM phases etc), the amount of new information would be pretty low. I'm halfway through the book and I can't say I've read something you can't find in popular articles on sleep – i.e. how caffeine works and why jet-lag is more bearable eastwest.

Fair enough. After all, several of the popular articles on sleep are written over slices of study covered by (or some led by) the author, so not surprisingly there's a lot of similar content. But I still saw a lot of value, particularly on Alzheimer's, the significance of dreams, the effect of alcohol, sleep disorders, why doctors usually don't care about sleep.

Above all, I appreciate his perspective on the importance of sleep for public health, and how transformative it could be for society. And how bad we're doing, by not enforcing public education and health policies to counterbalance the side effects of modern society - blue light, addiction-forming social media, school classes starting too early and others.

Concrete example:I did a routine physical exam last week, and my (new) doctor spent 20 minutes asking me questions about my family history and current behaviors, from food to favorite pastime to overall mental state. Incredibly comprehensive -- but not a single word about sleep. Simply didn't cross her mind to ask me how many hours on average I sleep per day/week -- despite many of the symptoms she was interested in assessing can be eventually caused by poor sleep - weight, mood, performance, memory, etc.

Read it based on the thread you posted. I feel like it's a book everyone should read and wished I had read it sooner.

Joe Rogan interviews the author here, great vid: https://www.youtube.com/watch?v=pwaWilO_Pig