Show · Hosted by Steven Bartlett

The Diary of a CEO

Steven Bartlett interviews founders, scientists, and health experts, and his guests tend to make specific, evidence-backed claims worth examining.

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52 episodes tracked · 23 guests covered · 35 pieces published, latest 2026-07-18

Kevin O'Leary says he never saw Steve Jobs happy or laughing, and that Jobs thought being nice was noise
The Diary of a CEO·Culture

Kevin O'Leary says he never saw Steve Jobs happy or laughing, and that Jobs thought being nice was noise

The Shark Tank investor turns a money episode into a bleak little sermon on Steve Jobs, genius, cruelty, and the Apple ghost that still sits in the room.

Jul 13, 2026
Neil deGrasse Tyson says Kessler syndrome could wipe out 100 percent of satellites within a few orbits
The Diary of a CEO·Culture

Neil deGrasse Tyson says Kessler syndrome could wipe out 100 percent of satellites within a few orbits

The astrophysicist’s real apocalypse scenario isn’t aliens or black holes, it’s orbital shrapnel moving faster than a bullet.

Jul 11, 2026
Neil deGrasse Tyson says Obama was right that aliens probably exist, but UFO believers still need to show the alien
The Diary of a CEO·Culture

Neil deGrasse Tyson says Obama was right that aliens probably exist, but UFO believers still need to show the alien

The astrophysicist’s alien position is less X-Files and more Costco math: too many planets, not enough proof.

Jul 9, 2026
Martin Picard says some gray hairs can turn dark again in about a week
The Diary of a CEO·Health

Martin Picard says some gray hairs can turn dark again in about a week

The mitochondrial scientist’s gray-hair claim is real enough to be fascinating, but not a permission slip to cancel your colorist.

Jul 6, 2026
Ben Felix says young people saving money in their 20s is probably a financial mistake
The Diary of a CEO·Money

Ben Felix says young people saving money in their 20s is probably a financial mistake

The Canadian portfolio manager and YouTuber has the research to back it up, and a caveat that could save you from using it as an excuse.

Jul 3, 2026
Jeremy Grantham says investors should wish SpaceX fails because success would supercharge AI robots
The Diary of a CEO·Money

Jeremy Grantham says investors should wish SpaceX fails because success would supercharge AI robots

The billionaire investor gives Steven Bartlett the rare anti-hype SpaceX take, then tells him his own stake may be sitting on a bubble story.

Jun 30, 2026
Exercise scientist StephOrrourke says 58-year-old women gained more mitochondrial efficiency from sprinting than 18-year-olds did
The Diary of a CEO·Health

Exercise scientist StephOrrourke says 58-year-old women gained more mitochondrial efficiency from sprinting than 18-year-olds did

The guest making the case that your VO2 max decline is not aging, it is just neglect, and that the fix is embarrassingly simple.

Jun 29, 2026
Jeremy Grantham says median male sperm count will hit zero by 2045
The Diary of a CEO·Health

Jeremy Grantham says median male sperm count will hit zero by 2045

The billionaire fund manager behind GMO has spent decades tracking civilizational collapse, and he thinks the most urgent one fits in a test tube.

Jun 27, 2026
Dr. Kelly Casperson says vaginal estrogen cream prevents UTIs by more than half and costs $14
The Diary of a CEO·Health

Dr. Kelly Casperson says vaginal estrogen cream prevents UTIs by more than half and costs $14

A urologist makes the case that the most overlooked women's health tool is a $14 cream, not a prescription drug, not a probiotic, and definitely not the advice to pee after sex.

Jun 26, 2026
Jeremy Grantham says US stocks may not recover for 20 years and Wall Street knows it
The Diary of a CEO·Money

Jeremy Grantham says US stocks may not recover for 20 years and Wall Street knows it

The veteran investor who called the 2000 and 2008 crashes says a 70% decline in US tech stocks would not be unexpected, and your financial advisor will never warn you.

Jun 25, 2026
UFO documentary filmmaker Matthew Perna says U.S. presidents have historically been kept in the dark about recovered alien bodies
The Diary of a CEO·Culture

UFO documentary filmmaker Matthew Perna says U.S. presidents have historically been kept in the dark about recovered alien bodies

The guest is not a crank with a podcast and a tinfoil aesthetic. He is a filmmaker who got Jay Stratton, the most senior UAP official in U.S. government history, on camera saying he saw non-human beings with his own eyes.

Jun 24, 2026
Creatine researcher Stuart Phillips says adding 5 grams of creatine to antidepressants doubled remission rates in women with major depression over 8 weeks
The Diary of a CEO·Health

Creatine researcher Stuart Phillips says adding 5 grams of creatine to antidepressants doubled remission rates in women with major depression over 8 weeks

The muscle supplement has a surprisingly strong case for your brain, but one number from a Utah depression trial is the one worth arguing about.

Jun 22, 2026
Mo Gawdat says AGI is already here and your job has roughly three years
The Diary of a CEO·Culture

Mo Gawdat says AGI is already here and your job has roughly three years

The ex-Google insider who wrote a book about AI happiness thinks the smarter-than-human threshold is not coming. It passed.

Jun 19, 2026
Gastroenterologist Will Bulsiewicz says gluten intolerance is mostly a misdiagnosis, and the real culprit is a carbohydrate called fructans
The Diary of a CEO·Health

Gastroenterologist Will Bulsiewicz says gluten intolerance is mostly a misdiagnosis, and the real culprit is a carbohydrate called fructans

The gut doctor behind a bestselling microbiome book has a study that upends a decade of gluten-free grocery shopping.

Jun 17, 2026
Graham Hancock Wants You to Believe Civilization Has a Missing Chapter
The Diary of a CEO·Culture

Graham Hancock Wants You to Believe Civilization Has a Missing Chapter

The author and ancient-history provocateur makes his case for a lost pre-ice-age civilization, and some of it is harder to dismiss than you'd expect.

Jun 15, 2026
Graham Hancock on Death, Lost Civilizations, and the Enemies He Can't Forgive
The Diary of a CEO·Culture

Graham Hancock on Death, Lost Civilizations, and the Enemies He Can't Forgive

The ancient-history provocateur comes in reflective and leaves a little raw.

Jun 13, 2026
Graham Hancock Wants You to Believe a Secret Society Built the Pyramids
The Diary of a CEO·Culture

Graham Hancock Wants You to Believe a Secret Society Built the Pyramids

The ancient-mysteries author brings his lost-civilization thesis to Diary of a CEO, and the math is more interesting than the mythology.

Jun 12, 2026
Graham Hancock Wants You to Know Science Is Just a Pimple on the Nose of Human History
The Diary of a CEO·Culture

Graham Hancock Wants You to Know Science Is Just a Pimple on the Nose of Human History

The ancient civilizations theorist comes to Diary of a CEO to relitigate everything, and some of it actually lands.

Jun 11, 2026
Nick Hanauer Comes to Yell About Neoliberalism and He's Not Wrong
The Diary of a CEO·Money

Nick Hanauer Comes to Yell About Neoliberalism and He's Not Wrong

The venture capitalist and self-described 'pitchfork-avoider' spends an hour telling a table of entrepreneurs that everything they believe about small business is right, and everything they believe about how to get there is wrong.

Jun 10, 2026
John Lennox on Hell, AI, and Why the Output Is Not the Point
The Diary of a CEO·Culture

John Lennox on Hell, AI, and Why the Output Is Not the Point

The Oxford mathematician and Christian apologist comes to Diary of a CEO to argue that consciousness, not computation, is what separates humans from machines, and that hell is something you choose.

Jun 6, 2026
John Lennox Says Transhumanists Are 2,000 Years Late to Solving Death
The Diary of a CEO·Culture

John Lennox Says Transhumanists Are 2,000 Years Late to Solving Death

The Oxford mathematician makes his case that AI is idolatry, atheism is self-defeating, and Christ already beat Silicon Valley to the resurrection.

Jun 5, 2026
John Lennox Told Peter Singer That Atheism Is a Faith, and the Internet Lost Its Mind
The Diary of a CEO·Culture

John Lennox Told Peter Singer That Atheism Is a Faith, and the Internet Lost Its Mind

The Oxford mathematician and Christian apologist sits down with Steven Bartlett and refuses to give easy answers, which turns out to be the most persuasive thing he can do.

Jun 4, 2026
Dr. David Unwin says 93 percent of his prediabetes patients normalized blood sugar on low carb
The Diary of a CEO·Health

Dr. David Unwin says 93 percent of his prediabetes patients normalized blood sugar on low carb

The British GP makes a strong case for treating fatty liver and prediabetes earlier, but his blockbuster number comes from practice data, not a universal guarantee.

Jun 3, 2026
Mo Gawdat says everyone except China and America is about to become third world in AI
The Diary of a CEO·Culture

Mo Gawdat says everyone except China and America is about to become third world in AI

The former Google X executive's bleak AI forecast is less about killer robots than the UK paying rent forever to someone else's software stack.

Jun 2, 2026
Ex-Google Insider Mo Gawdat Says Your Job Has About Three Years
The Diary of a CEO·Money

Ex-Google Insider Mo Gawdat Says Your Job Has About Three Years

The former Google X chief business officer comes to The Diary of a CEO with a countdown clock and a dim view of Sam Altman's recent pivot to optimism.

Jun 1, 2026
Cenk Uygur says Israel blocks an Iran peace deal every time Trump moves toward peace
The Diary of a CEO·Culture

Cenk Uygur says Israel blocks an Iran peace deal every time Trump moves toward peace

On The Diary of a CEO, Uygur argued that Trump has a deal available with Iran, but Benjamin Netanyahu keeps pushing him back toward war.

May 30, 2026
Cenk Uygur says Israel gave America a list of seven countries to attack after 9/11
The Diary of a CEO·Culture

Cenk Uygur says Israel gave America a list of seven countries to attack after 9/11

The Young Turks host turns a Diary of a CEO Iran debate into a blunt accusation about U.S. foreign policy, while Kevin O'Leary argues the real issue is stopping Iran from getting a bomb.

May 29, 2026
David Bach's $27.40 Sermon Is Both Simple and Incomplete, Which Is Exactly the Point
The Diary of a CEO·Money

David Bach's $27.40 Sermon Is Both Simple and Incomplete, Which Is Exactly the Point

The 'Automatic Millionaire' guy brought a brick of cash to London and made a very clean argument for a very messy reality.

May 28, 2026
Michio Kaku Says We're Probably Not in a Simulation, and He Has 71 Years of Physics to Back It Up
The Diary of a CEO·Culture

Michio Kaku Says We're Probably Not in a Simulation, and He Has 71 Years of Physics to Back It Up

The string theory co-founder visits Diary of a CEO and does something rare: he actually answers the big questions, then politely dismantles one of the internet's favorite cosmic theories.

May 27, 2026
Marisa Peer says proper hypnosis can fix extreme picky eating in an hour
The Diary of a CEO·Health

Marisa Peer says proper hypnosis can fix extreme picky eating in an hour

On The Diary of a CEO, Peer hypnotized Steven Bartlett over sugar, then claimed severe food restriction can be changed in a single session.

May 26, 2026
Bruno Fernandes says he rejected a reported £200 million Middle East offer because he still has Manchester United dreams
The Diary of a CEO·Interviews

Bruno Fernandes says he rejected a reported £200 million Middle East offer because he still has Manchester United dreams

The Manchester United captain gives the romantic answer, and the episode mostly lets the romance win.

May 25, 2026
Michio Kaku Will Not Tell You Whether Aliens Exist, No Matter What You Threaten
The Diary of a CEO·Culture

Michio Kaku Will Not Tell You Whether Aliens Exist, No Matter What You Threaten

The theoretical physicist comes prepared with one answer for every question: maybe.

May 23, 2026
Michio Kaku Calls Genesis a Fairy Tale and Then Explains Why That's Fine
The Diary of a CEO·Culture

Michio Kaku Calls Genesis a Fairy Tale and Then Explains Why That's Fine

The theoretical physicist comes to the Diary of a CEO to talk immortality, nuclear annihilation, and why the Bible is a metaphor he actually respects.

May 22, 2026
Natalie Dawson says you should not think about passive income until you have $1 million in the bank
The Diary of a CEO·Money

Natalie Dawson says you should not think about passive income until you have $1 million in the bank

The business operator’s blunt advice on The Diary of a CEO is useful, if a little too clean for the messy reality of getting rich.

May 21, 2026
The Doctor Who Blamed His Patients for 25 Years Finally Turned the Mirror on Himself
The Diary of a CEO·Health

The Doctor Who Blamed His Patients for 25 Years Finally Turned the Mirror on Himself

Dr. David Unwin's sugar teaspoon test will ruin your breakfast cereal forever.

May 20, 2026