

Dr Karan Explores
OG Podcasts
Join Dr Karan as he meets the world's foremost experts in science and medicine to cut through the BS of modern health advice.
Get my free weekly newsletter filled with easy to action health tips, interesting facts & science to fill your curiosity: https://drkaran.beehiiv.com/subscribe
Get my free weekly newsletter filled with easy to action health tips, interesting facts & science to fill your curiosity: https://drkaran.beehiiv.com/subscribe
Episodes
Mentioned books

Dec 12, 2025 • 52min
Answering All Your Top Fibre Questions | Dr Karan AMA
⚡ I asked you to send in your questions about FIBRE - and you really delivered! In this AMA I tackle your burning questions about one of the most important - and underhyped - nutrients for your health.💬 Everything from the best fibre sources to include in your diet, to actionable advice on fibre intake, dosage and timing - my producer Ollie Guillou and I cover a wide range of fantastic questions from you. Plus everything you wanted to know about my new supplement LOAM.🎧 Stay tuned to find out:➡ The best sources of soluble and insoluble fibre (and why beans are king)➡︎ How to avoid constipation and have perfect poops➡︎ How to easily add more fibre variety to your diet➡︎ Fibre’s role in clearing microplastics and nasties from your gut➡︎ Why LOAM was created - and how it differs from normal fibre supplements#DrKaran #MedicalScience #HealthEducation #HealthTips #Fibre #LOAM #Supplements #Microbiome #GutHealth #Nutrition #MedicalScienceDon't miss an episode! Subscribe NOW: https://www.youtube.com/@DrKaran?sub_confirmation=1📕 Chapters(00:00) Intro(01:05) Isn't fibre just vegetables?(01:49) What’s the point in sweetcorn?(02:56) Does fibre lose its efficacy when it's cooked or blended?(05:54) Is fiber a physical or chemical component?(07:57) Is there such a thing as fibre toxicity?(10:02) What is fibre’s role related to estrogen?(11:59) Why do Drs still prescribe the likes of Fybogel etc and ignore the microbiome?(14:36) How much fibre should the average adult have per day?(16:29) What’s the best time to take psyllium husk?(19:00) Can you have too much of one type e.g. too much inulin powder?(20:24) Can eating too much fibre make you constipated?(22:50) Can you eat the same thing(s) for your fibre source every day?(25:26) Does fibre cause an increase in scale weight?(26:22) Best fibre for helping form stools?(27:31) Main sources of soluble fibre?(28:25) Are chia seeds enough fibre to be having?(29:30) Guar gum / sunfiber for fibre?(30:28) Is green salad a good source of fibre? (32:09) Are beans ultimately the secret to really big poops?(33:55) Why is the carnivore diet so popular when they don’t eat fibre?(36:53) Fibre needs for people on GLP-1s?(38:33) How does fibre help with muscle definition, muscle mass and fat loss?(39:30) Fibre’s effect on mental health(41:23) Can high-fibre diets reduce very high LDL without a statin? (43:02) Does fibre help with removal of microplastics and other nasties?(44:25) What is LOAM?(45:24) What’s the dose for each ingredient in LOAM?(47:08) I put LOAM in my coffee - will my arse explode?(48:09) Can you take another fibre supplement with LOAM?(48:44) Does the LOAM supplement still work if it’s used in baking or hot beverages?(49:40) Is LOAM suitable for people suffering with gut conditions?(50:59) Calorie content of LOAM🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 💊 Sign up to the wait list for my new fibre supplement LOAM - https://loamscience.com/password 🎙️ An OG Podcasts production.⚡ About Dr Karan:Dr. Karan Rajan is a doctor, author, and educator dedicated to making health and medical science accessible to all. Through evidence-based analysis, he addresses topics such as gut health, brain health, and healthy lifestyle choices, while dispelling common medical myths with a touch of dark humor. His content provides reliable, research-driven insights designed to inform and empower viewers to better understand their health.📱 Follow Dr Karan:Instagram: https://www.instagram.com/drkaranrajan/ Facebook: https://www.facebook.com/DrKaranR/ TikTok: https://www.tiktok.com/@dr.karanr X: https://twitter.com/drkaranrajan Website: https://linktr.ee/ThisisVitalInformation

12 snips
Dec 5, 2025 • 57min
This Toilet Device Tracks Health Better Than Wearables ft. Scott Hickle | Dr Karan
Scott Hickle, co-founder of Throne Science, discusses groundbreaking health-monitoring technology that turns your toilet into a health tracker. He reveals how stool and urine can provide vital insights into hydration, stress, and even early signs of diseases like colorectal cancer. Scott explains the hidden biomarkers in our waste and emphasizes the importance of continuous monitoring over one-time snapshots. Discover how this innovative device could transform preventive medicine and potentially save millions of lives.

Nov 28, 2025 • 59min
How AI Is Unlocking The Microbiome: Dr Amine Zorgani on the Future of Gut Health
⚡ Our gut microbes are each individual and highly variable - shaped by many different factors. So how do you take control of your gut health, when everyone’s gut bugs are unique💬 Dr Amine is a microbiome expert and CEO at SwipeBiome. He also hosts The Microbiome Mavericks podcast. His company aims to untangle the messy web of gut information we currently have access to, using technology and AI to unlock new, personalised approaches to gut health.🎧 Stay tuned to find out:➡ How our guts have their own circadian rhythms - and fluctuate constantly➡︎ How gut links to conditions like autism are more complex than you think➡︎ Why prebiotics are for everyone, even if you’re “healthy”➡︎ Why child gut health needs more attention - and real solutions➡︎ How AI is helping us to decode gut health and personalise treatments📕 Chapters(00:00) Intro(01:02) The future of gut medicines(08:37) How AI will level-up our understanding of the gut microbiome(13:55) How adaptable and variable are our guts?(18:05) Why personalised gut advice is crucial, but tough(23:09) Customising gut advice for symptom management (like IBS)(29:04) Using AI to unlock new therapies(33:32) Are “natural ozempic” foods really effective?(38:59) How our gut health impacts obesity risk(44:54) How junk food confuses your microbiome(51:41) The role of a parent’s microbiome on child health(54:55) How SwipeBiome is levelling up gut science📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanYouTube: https://www.youtube.com/@DrKaran Instagram: https://www.tiktok.com/@dr.karanr📱 Connect with Amine:LinkedIn: https://www.linkedin.com/in/amine-zorgani/ Website: https://www.swipebiome.com/ 🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 📕 Pre-order my new book, This Is Vital Information, here: https://linktr.ee/ThisisVitalInformation?utm_source=linktree_profile_share<sid=472cbbde-00e2-42ab-8a3f-725656fab3a5Head to https://loamscience.com/ try LOAM - and get an additional 10% with code POD10.🎙️ An OG Podcasts production.

Nov 21, 2025 • 44min
The Menopause: What’s Actually Happening To Your Hormones | Prof. Susan Davis
⚡ There is a lot we don’t know about the menopause. It’s a stage of life that can be difficult to navigate for many women - especially since the advice online is all over the place. That’s why I’ve brought on leading menopause researcher Professor Susan Davis.💬 Susan is the Head of the Monash University Women’s Health Research Program. Online she’s dedicated to clearing up the myths and dogma that surround all stages of the menopause.🎧 Stay tuned to find out:➡ What ARE the symptoms of menopause (and what’s not)➡︎ Do you need HRT to top up estrogen and testosterone levels?➡︎ When does perimenopause really begin? ➡︎ Why does sexual dysfunction double in early perimenopause➡︎ What science-backed tips can ease the symptoms of menopause?📕 Chapters(00:00) Intro(00:57) Biggest misconception about the menopause(01:30) The real symptoms of menopause(04:40) When does perimenopause really begin?(06:23) The role of estrogen and hormones(12:54) What is ‘menopause belly’?(16:51) Are supplements helpful for menopause?(20:48) The basics of hormone replacement therapy(23:03) Why does sexual dysfunction double in early perimenopause(27:30) HRT loses its black box warning(29:29) The harm of over prescribing and big dose HRT(37:31) What can trigger the menopause (besides age)?(41:02) Are there biomarkers you should track?(43:03) Susan’s final message📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanYouTube: https://www.youtube.com/@DrKaran Instagram: https://www.tiktok.com/@dr.karanr📱 Connect with Susan:Instagram: https://www.instagram.com/professorsusandavis/ 🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 🎙️ An OG Podcasts production.

Nov 7, 2025 • 32min
Women’s Health Special: The REAL Science of Hormones, Birth Control, Fertility & Menopause | Dr Karan
⚡ Women’s health issues have been ignored for so long - but science is finally catching up. The problem is, the message still hasn’t reached everyone. That’s why I’m doing a deep dive into the real science of hormone health, birth control, fertility and the menopause.💬 In this episode of the podcast, I offer practical and actionable advice on each of these important areas of female health, featuring a range of expert voices from past interviews, including:⭐ Fertility expert Ro Huntriss⭐ OB/GYN and NYT Bestselling author Dr Jen Gunter⭐ Female health dietician Cory Ruth⭐ Endometriosis expert Dr Jill Ingenito⭐ Head Nutritionist at ZOE, Dr Federica Amati🎧 Stay tuned to find out:➡ How hormones are MEANT to be dynamic and fluctuate➡︎ How different types of birth control work and why you shouldn’t fear it➡︎ What a “fertility diet” actually looks like (and the supplements that help)➡︎ Why MEN are just as big a part of the fertility puzzle as women➡︎ Why the menopause is the START of the journey, not the end#DrKaran, #MedicalScience, #HealthEducation, #HealthTips, #WomensHealth, #HormoneHealth, #Fertility, #BirthControl, #Menopause, #DrKaranExplores, #FemaleHealth, #HormoneBalance, #Nutrition, #MedicalScienceDon't miss an episode! Subscribe NOW: https://www.youtube.com/@DrKaran?sub_confirmation=1📕 Chapters(00:00) Intro(00:20) The knowledge gap in female health(06:25) The truth about birth control(11:37) What really impacts fertility(25:42) A new story about the menopause🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 💊 Sign up to the wait list for my new fibre supplement LOAM - https://loamscience.com/password 🎙️ An OG Podcasts production.⚡ About Dr Karan:Dr. Karan Rajan is a doctor, author, and educator dedicated to making health and medical science accessible to all. Through evidence-based analysis, he addresses topics such as gut health, brain health, and healthy lifestyle choices, while dispelling common medical myths with a touch of dark humor. His content provides reliable, research-driven insights designed to inform and empower viewers to better understand their health.📱 Follow Dr Karan:Instagram: https://www.instagram.com/drkaranrajan/ Facebook: https://www.facebook.com/DrKaranR/ TikTok: https://www.tiktok.com/@dr.karanr X: https://twitter.com/drkaranrajan Website: https://linktr.ee/ThisisVitalInformation

Nov 1, 2025 • 23min
Real Science of Fasting, Dangers of Microplastics & How To Eliminate Visceral Fat
⚡ Is fasting really a magic solution for weight loss? Some people argue it’s just a good way of cutting calories, while others say its benefits go far beyond that. But what does the science say? From fat loss, to appetite regulation and gut health improvements, I explore the good (and the bad) of fasting for health. 💬 In this special solo episode of the podcast, I also discuss the growing concern of microplastics. These tiny particles are everywhere, including our bodies - and they could be harmful to our health. So I talk through solutions on how to minimise your exposure. And I also tackle visceral fat - why it’s harmful and how to get rid of it.🎧 Stay tuned to find out:➡ Why fasting can help metabolic health but isn’t a magic bullet➡︎ How fasting affects gut health, bloating, and your appetite hormones➡︎ Why microplastics trigger inflammation and oxidative stress➡︎ Foods and habits that help your body flush out microplastics➡︎ The most effective habits to eliminate dangerous visceral fat#DrKaran, #MedicalScience, #HealthEducation, #HealthTips, #Fasting, #IntermittenFasting, #TimeRestrictedEating, #GutHealth, #AppetiteSupression, #Microplastics, #VisceralFat, #BodyFat, #StubbornFat, #ExerciseScienceDon't miss an episode! Subscribe NOW: https://www.youtube.com/@DrKaran?sub_confirmation=1📕 Chapters(00:00) Intro(01:26) Why fasting is good for your body(09:29) How bad are microplastics for your health?(15:34) How to get rid of visceral fat🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 💊 Sign up to the wait list for my new fibre supplement LOAM - https://loamscience.com/password 🎙️ An OG Podcasts production.⚡ About Dr Karan:Dr. Karan Rajan is a doctor, author, and educator dedicated to making health and medical science accessible to all. Through evidence-based analysis, he addresses topics such as gut health, brain health, and healthy lifestyle choices, while dispelling common medical myths with a touch of dark humor. His content provides reliable, research-driven insights designed to inform and empower viewers to better understand their health.📱 Follow Dr Karan:Instagram: https://www.instagram.com/drkaranrajan/ Facebook: https://www.facebook.com/DrKaranR/ TikTok: https://www.tiktok.com/@dr.karanr X: https://twitter.com/drkaranrajan Website: https://linktr.ee/ThisisVitalInformation

Oct 24, 2025 • 34min
The Future of Food: Why Ultra Processed Food Isn’t All Bad | James Collier
⚡ Have we got ultra-processed food wrong? Is the old term “junk food” a better measure of health? It’s clear our current food environment is not just damaging our health, but the planet too. But James Collier argues ultra-processed food needs to be part of the solution.💬 James is the co-founder of Huel and former NHS dietitian. He’s also the author of Well Fed. In the book he outlines how modern diets are failing us and what we can do about it. And in this episode he takes us through🎧 Stay tuned to find out:➡ Why the ethics of food choice, waste and sustainability is so important➡︎ The five pillars of contemplative nutrition - and how to integrate them into your life➡︎ Whether Huel is an ultra-processed food (and does that matter?)➡︎ What the future of food looks like, from lab-grown meat to insect protein➡︎ How 30% of global greenhouse gas emissions come from what we eat📕 Chapters(00:00) Why isn’t the food system sustainable?(05:00) Is it just better to be vegan / vegetarian for health and planet?(07:28) The core tenants of contemplative nutrition(09:45) Is Huel an ultra-processed food?(17:16) How ultra processing and convenience might be a benefit(20:36) The future of lab-grown meat(26:44) Insect food - will it go mainstream?(30:19) James’ vision of the future📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanYouTube: https://www.youtube.com/@DrKaran Instagram: https://www.tiktok.com/@dr.karanr📱 Connect with James:LinkedIn: https://uk.linkedin.com/in/jamescollierrnutr Instagram: https://www.instagram.com/jamescollierrnutr/ 🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 🎙️ An OG Podcasts production.

Oct 17, 2025 • 32min
The Hidden Psychology Behind Every Purchase ft. Rory Sutherland
⚡ Clever marketing tactics can often shift us away from what’s important - as advertisers look for fresh ways to exploit our psychology. So, when it comes to your health, how do you stay savvy in a world which is pulling your attention in the wrong direction?💬 Rory Sutherland is one of the world’s foremost experts on marketing and human behaviour. He’s an author, columnist and Vice Chairman of the Ogilvy advertising company. He guides us through the inner workings of the human mind - and we’re not as logical as we think.🎧 Stay tuned to find out:➡ Why the human brain is susceptible to certain marketing tactics➡︎ Why protein beat fibre to become the posterboy for health➡︎ How the microbiome has been hijacked by marketers➡︎ Why habit stacking can health you stick to your health goals➡︎ How narratives can be flipped to a marketer’s advantage📕 Chapters(0:00) The invisible tricks used by marketers(6:02) Protein v Fibre: A marketing battle(11:12) Hijacking the microbiome to sell health products(20:59) Placebo effect of health products: The science of skeuomorphism(27:39) What you really need to know about marketing tactics📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanYouTube: https://www.youtube.com/@DrKaran Instagram: https://www.tiktok.com/@dr.karanr📱 Connect with Rory:YouTube: https://www.youtube.com/@RorySutherland-UK/ TikTok: https://www.tiktok.com/@rorysutherlandclips X: https://x.com/rorysutherland🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 🎙️ An OG Podcasts production.

Oct 10, 2025 • 41min
What Creatine ACTUALLY Does to Your Body, Science-Backed Skincare Tips & Ozempic Truths
⚡ Creatine isn’t just for bodybuilders - it’s an incredible supplement for just about everyone. It’s a staple for people who want to build muscle, but new research also shows surprising links to brain and heart health. 💬 In a special solo episode of the podcast, I explain just how amazing creatine is - and bust the biggest myths about its safety. I also take an unconventional look at skincare through the lens of the microbiome and gut-skin axis. And I explore the growing trend of people microdosing Ozempic and other weight loss drugs.🎧 Stay tuned to find out:➡ Exactly how to use creatine - and why its benefits extend beyond muscle➡︎ Whether creatine really does cause hair loss, kidney problems and dehydration➡︎ Why using fewer products is better for your skin - plus minimalist routine tips➡︎ How skin health is directly tied gut inflammation➡︎ Why microdosing GLP-1s is probably not as useful as you’d think#DrKaran #MedicalScience #HealthEducation #HealthTips #Creatine #MuscleGain # BrainHealth #HeartHealth #SkinCareRoutine #GutHealth #Microbiome #Ozempic #Semaglutide #GLP-1 #WegovyDon't miss an episode! Subscribe NOW: https://www.youtube.com/@DrKaran?sub_confirmation=1📕 Chapters(00:00) Intro(00:48) How to use creatine(16:11) Rethinking skin care(30:38) Microdosing Ozempic🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 💊 Sign up to the wait list for my new fibre supplement LOAM - https://loamscience.com/password 🎙️ An OG Podcasts production.⚡ About Dr Karan:Dr. Karan Rajan is a doctor, author, and educator dedicated to making health and medical science accessible to all. Through evidence-based analysis, he addresses topics such as gut health, brain health, and healthy lifestyle choices, while dispelling common medical myths with a touch of dark humor. His content provides reliable, research-driven insights designed to inform and empower viewers to better understand their health.📱 Follow Dr Karan:Instagram: https://www.instagram.com/drkaranrajan/ Facebook: https://www.facebook.com/DrKaranR/ TikTok: https://www.tiktok.com/@dr.karanr X: https://twitter.com/drkaranrajan Website: https://linktr.ee/ThisisVitalInformation

Oct 3, 2025 • 39min
Does Tylenol REALLY Cause Autism?; Health Benefits of Matcha; A Good Brain Health Guide
⚡ The US Government has made waves suggesting Tylenol, aka paracetamol, causes autism. President Donald Trump publicly warned pregnant women to avoid the common pain-killer, even urging them to “tough it out” if they have a fever. But what are they basing this information on? Is there even an ounce of truth in the claim?💬 In a special solo episode of the podcast, I address the Tylenol controversy and explore why Trump’s advice is dangerous for pregnant women. I also look at the growing health trend of matcha tea, and whether its purported benefits line up with the science. Plus I offer a good brain health guide - exploring the factors you can address now to improve your brain and stave off dementia.🎧 Stay tuned to find out:➡ Where the autism/Tylenol claim comes from - and why its not reliable➡︎ How untreated fever poses way more risk to a fetus than Tylenol➡︎ Which components give Matcha its health benefits - including fiber and antioxidants➡︎ The type of Matcha you should choose (and what to avoid)➡︎ The 14 lifestyle factors that improve brain health and reduce dementia risk#DrKaran #MedicalScience #HealthEducation #HealthTips #Tylenol #DonaldTrump #Paracetamol #Autism #ADHD #Matcha #MatchaTea #Fiber #Antioxidants #BrainHealth #Dementia #Alzheimers #Creatine #MuscleGain # BrainHealth #HeartHealth #SkinCareRoutine #GutHealth #Microbiome #Ozempic #Semaglutide #GLP-1 #WegovyDon't miss an episode! Subscribe NOW: https://www.youtube.com/@DrKaran?sub_confirmation=1📕 Chapters(00:00) Intro(01:06) Tylenol and autism(11:39) Health benefits of matcha tea(24:14) A guide to brain health🔥 Get my free weekly newsletter filled with easy to action health tips, interesting facts and science to fill your curiosity: https://drkaran.beehiiv.com/subscribe🔥 For more useful science for your everyday life, grab my best selling book “This Book May Save Your Life”: https://geni.us/DrKaranBook 💊 Sign up to the wait list for my new fibre supplement LOAM - https://loamscience.com/password 🎙️ An OG Podcasts production.⚡ About Dr Karan:Dr. Karan Rajan is a doctor, author, and educator dedicated to making health and medical science accessible to all. Through evidence-based analysis, he addresses topics such as gut health, brain health, and healthy lifestyle choices, while dispelling common medical myths with a touch of dark humor. His content provides reliable, research-driven insights designed to inform and empower viewers to better understand their health.📱 Follow Dr Karan:Instagram: https://www.instagram.com/drkaranrajan/ Facebook: https://www.facebook.com/DrKaranR/ TikTok: https://www.tiktok.com/@dr.karanr X: https://twitter.com/drkaranrajan Website: https://linktr.ee/ThisisVitalInformation


