Harvard Professor David Sinclair: Can Aging Be Reversed? After 8 Weeks, Cells Appeared 75 Percent Younger in Tests! (Video)

In this 23 March 2026 published video, host Steven Bartlett talks with sScientist and Harvard professor Dr. David Sinclair, A.O., Ph.D., who reveals his latest research on how to reverse ageing, insights into vitamins and supplements, why DNA is not your destiny, and the first clinical trials to reverse human ageing and blindness!

Dr. David Sinclair is a world-renowned Professor of Genetics at Harvard Medical School and the leading authority on longevity science. He is Founder of Lifespan.com and multiple biotechnology companies, Co-Chief Editor of the journal Ageing, and bestselling author of ‘Lifespan: Why We Age – And Why We Don’t Have To’. 

Dr. Sinclair explains: 

• The “Information Theory of Aging” that regards ageing as a treatable disease 
• Advances in resetting biological age using cellular “backup copies” 
• His specific supplement stack for longevity
• Why fasting and “good stress” are science-based longevity strategies 
• How his lab’s gene therapy is being used to restore eyesight and reverse blindness 

https://youtu.be/DnvWAP99r3Y

00:00 Intro
03:34 The Children’s Book That Quietly Shaped Everything That Came Next
06:27 Why Living To 80 Might Be Far More Alarming Than You Think
09:12 Inside The First Human Trials Attempting To Reverse Ageing
12:23 How Scientists Actually Slowed Ageing In Mice—And What That Means For Us
14:51 Will An Anti-Ageing Pill Really Exist—Or Is That A Dangerous Myth?
16:44 What Happens If You Live Long Enough To See The 22nd Century
18:34 Is Immortality Even The Goal—Or A Terrifying Possibility?
20:43 The Real Reason Your Body Might Be More Like Software Than Biology
29:33 What Happened When One Mouse Was Forced To Age Faster Than Its Twin
34:12 The Most Overlooked Habits That Could Be Quietly Slowing Your Ageing
37:43 Why Evolution Never Solved Ageing—And What That Reveals
41:58 If You Reverse Ageing, Do Diseases Disappear Too?
44:13 Could Age-Reversal Technology Unexpectedly Solve Infertility?
47:37 The Controversial Reason The US Shut Down Age-Reversal Research
50:41 Would You Trade Everything You Own Just To Be Young Again?
53:52 What Living Longer Really Does To Meaning, Purpose, And Motivation
59:02 How Slowing Ageing Might Secretly Slow Cancer Too
01:01:29 The Real Cause Of Cancer—And Why It’s Not What Most Think
01:02:45 The Information Theory Of Ageing That Changes Everything
01:04:17 Why Ageing Feels Like Carrying Invisible Weight Every Day
01:08:43 Why Eating Three Meals A Day Might Be Holding You Back
01:13:55 The Discovery Of The Longevity Gene—And Why It Matters Now
01:20:59 The Fasting Method That Could Actually Extend Your Life
01:25:23 Is The Keto Diet A Longevity Hack—Or A Misguided Trend?
01:26:45 Why Plant-Based Eating Might Be The Simplest Longevity Upgrade
01:30:34 What Makes Matcha So Powerful—And Is It Overhyped?
01:31:39 Is Red Wine Helping Your Health—Or Quietly Hurting It?
01:33:31 The Truth About Exogenous Ketones And What They Really Do
01:34:33 Why Starting Statins At 30 Might Not Be As Extreme As It Sounds
01:37:13 The 5 Foods That Could Have The Biggest Impact On Your Lifespan
01:41:04 Why Taking Fewer Supplements Might Actually Be Better
01:46:45 Do Saunas And Cold Plunges Deliver Real Results—Or Just Hype?
01:49:56 Does Red Light Therapy Actually Work—Or Is It Wishful Thinking?
01:50:41 What A “Perfect” Supplement Stack Really Looks Like
01:55:01 Aspirin: Miracle Drug Or Risky Habit?
01:57:48 The Real Way To Fight Hair Loss Before It’s Too Late
01:59:24 Should Men Take Testosterone—And What Are The Trade-Offs?
02:00:02 The Future Of Ageing: What Happens Next Will Surprise You
02:10:39 Are Scientists Crossing A Line—Or Pushing Humanity Forward?
02:39:28 What To Watch Next If This Changed How You Think About Ageing
02:40:55 The One Action To Take After Listening To This
02:42:00 Why This Conversation Might Matter More Than You Realize