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. We cover the episodes where the claim is big enough to matter — lost civilizations, AI timelines, crash forecasts, longevity stats — and check what the guest actually said against what made the clip.
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The best The Diary of a CEO episodes
- Graham Hancock: the secret society that built the pyramids
The ancient-mysteries author brings his full lost-civilization thesis to Bartlett's studio, and in our read the math is more interesting than the mythology.
- Mo Gawdat: AGI is already here and your job has roughly three years
The former Google X chief business officer arrives with a countdown clock and a dim view of Sam Altman's optimism — the most-cited AI timeline in the show's back catalog.
- Kevin O'Leary on Steve Jobs: never saw him happy or laughing
O'Leary turns a money episode into a bleak sermon on genius, cruelty, and the Apple ghost that still sits in every founder conversation about what management should cost the people around it.
- Michio Kaku: we're probably not in a simulation, and he has 71 years of physics to back it up
The string theory co-founder does something rare on this show — he actually answers the big questions, then politely dismantles one of Bartlett's favorite premises.
- Neil deGrasse Tyson: Kessler syndrome could wipe out every satellite in a few orbits
Tyson's real apocalypse scenario is neither aliens nor black holes but orbital shrapnel moving faster than a bullet — the rare space episode where the physics is scarier than the sci-fi.
- Jeremy Grantham: US stocks may not recover for 20 years, and Wall Street knows it
The investor who called the 2000 and 2008 crashes argues a 70 percent decline in US tech would not be unexpected — and explains why your financial advisor cannot say so out loud.
- John Lennox: transhumanists are 2,000 years late to solving death
The Oxford mathematician argues AI is idolatry and Christ beat Silicon Valley to the resurrection — the most substantive religion-vs-tech episode in the show's run.
- Dr. Rena Malik: sex once a week, 49 percent longer life — and the catch
The urologist brings a big longevity stat, then quietly admits the boring part: sex is probably a marker of health rather than a lever you can pull. That honesty is why the episode holds up.
- Dr. David Unwin: 93 percent of prediabetes patients normalized blood sugar on low carb
A strong case for treating fatty liver and prediabetes earlier — with our caveat that the blockbuster number comes from practice data, not a randomized trial.
- Nick Hanauer: Bernie Sanders's 50 percent AI ownership plan is common sense, not socialism
The venture capitalist makes the capitalist case for grabbing a public slice of AI wealth before the layoff machine starts — an argument from inside the machine, which is what makes it land.
Most watched all time
- 1 The REAL Reason You Wouldn’t Even See It Coming 1,600,000 views
- 2 If You Think Heaven Is FAKE, You NEED To See This 1,400,000 views
- 3 The SHOCKING Truth About The Pyramids No One Tells You 1,400,000 views
- 4 Astrophysicist WARNS: "You're Not Prepared For This" 1,400,000 views
- 5 If YOU Plan To Have Kids, You NEED To See This 1,300,000 views
- 6 If YOU Are 'Saving' Money, You NEED To Stop! 1,200,000 views
- 7 The SIMPLE Way To Clean Your FATTY Liver (Science Backed) 1,000,000 views
- 8 Tech Insider WARNS: "You Are Not Prepared For 2027" 979,077 views
- 9 The SIMPLE Way To Reverse Gray Hair (Science Backed) 916,000 views
- 10 Billionaire WARNS: "A 70% Crash Has Already Started'' 908,000 views
Latest episodes
- The EASIEST Way To Make Money With AI (From Scratch) Sep 3, 2026
- The REAL Reason Big Pharma Want Peptides Banned Sep 2, 2026
- The REAL Reason Scientists Can Now Reverse Aging Sep 1, 2026
- The REAL Reason AI Won't Take Your Job Aug 31, 2026
- The BRUTAL Truth About Parenting No One Tells You Aug 29, 2026
76 episodes tracked · 31 guests covered · 45 pieces published, latest 2026-08-31
All The Diary of a CEO coverage
Tara Swart says she is 100% sure she can communicate with her dead husband
The neuroscientist and former psychiatrist ties a 34-senses argument to after-death communication, but her best evidence is still personal grief, not proof.
Ian Bremmer says Anthropic's new AI model is dangerous to all of us globally
The geopolitical-risk expert argues that AI needs the same kind of emergency oversight finance got after crises, and he points to Anthropic as the warning flare.
Graeme Hancock says every world leader should take ayahuasca a dozen times before running for office
The lost-civilization author turned a mortality chat into a psychedelic hiring policy for presidents, prime ministers, and anyone near the nuclear codes.
Daniel Kokotajlo says mass unemployment starts in 2028 or 2029, after AI companies automate themselves first
The former OpenAI researcher argues that the scary part is not today’s chatbot taking your job, it is AI labs building superintelligence before the labor market even knows what hit it.
Neil deGrasse Tyson says English-speaking cultures report vastly more alien sightings than other cultures
On The Diary of a CEO, Tyson argues that the alien boom says less about extraterrestrials than it does about human brains, Hollywood, and who knows how to file a weird story.
Martin Picard says Steve Jobs's reality distortion field was an energetic quality, not just charisma
The mitochondrial scientist turns Steve Jobs lore into a theory of human energy, and yes, the metaphor is doing push-ups.
Darren Candow says elevated kidney markers from creatine are false positives 99 out of 100 times
The creatine researcher says the supplement’s scariest reputation is mostly a lab-test misunderstanding, not kidney damage.
Arthur C. Brooks says 95% of diets fail because the reward is realizing you can never eat what you like again
The happiness scholar's best point is not that willpower is weak, it is that weight-loss goals are often designed to emotionally collapse the moment they succeed.
Nick Hanauer says Bernie Sanders's 50 percent AI ownership plan is common sense, not socialism
On The Diary of a CEO, the venture capitalist made the capitalist case for grabbing a public slice of AI wealth before the layoff machine starts printing money.
Rena Malik says people who have sex once a week live 49 percent longer than people who have sex once a year
The urologist brings a big longevity stat to The Diary of a CEO, then quietly admits the boring but crucial part, sex is probably a marker of health as much as a cause of it.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.