
Dr Karan Explores
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
Latest episodes

Apr 25, 2025 • 36min
Why You Should Be Taking Omega-3 Supplements | Prof. Philip Calder
💬 “ Omega-3s have important health attributes right across the life course. They're right up there with fruit and veg”⚡️ Philip Calder is professor of nutritional immunology in the Faculty of Medicine at the University of Southampton. His specific areas of interest are inflammation and the health benefits of omega-3 fatty acids.⚡ In this episode Phil and I explore the science of inflammation (and why it’s not always the villain) and delve deep into the topic of fish oil and omega-3s - are you getting enough?🎧 Stay tuned to find out:➡︎ Whether “anti-inflammatory” foods really exist➡︎ The lifestyle factors that drive the bad kind of inflammation➡︎ The best way to get omega-3s if you don’t like fish➡︎ What to look out for in an omega-3 supplement➡ Why dry seaweed might be the solution to your omega-3 problem📕 Chapters(0:52) The science of inflammation(4:27) Is inflammation driven by lifestyle?(6:45) Can foods really be “anti-inflammatory”?(12:18) Should you be supplementing with omega-3s?(20:51) Do people with healthy diets still need omega-3s supplements?(23:09) Can omega-3 supplements replace food sources?(27:30) Why studies use such high doses of omega-3s(33:20) Replacing fish with dry seaweed📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with Philip CalderWebsite: https://www.southampton.ac.uk/people/5wzh2r/professor-philip-calder 🔥 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.

Apr 18, 2025 • 1h
How Endometriosis Hijacks Your Gut, Brain, and Fertility | Dr Jill Ingenito
💬 “ When people come in to see me for pelvic pain, you need to convince me that you DON’T have endometriosis.”⚡️ Dr Jill Ingenito is an endometriosis excision surgeon, one of few Ob/Gyn’s specialising in the field. She’s amassed a strong following online, talking about this chronically under represented health issue affecting so many women.⚡ In this episode Jill and I explore just how common endometriosis is, why it takes so long for women to be diagnosed and what the condition does inside a woman’s body.🎧 Stay tuned to find out:➡︎ Why so few in healthcare know to look for endometriosis➡︎ Why we’re probably drastically underestimating how many people have the condition➡︎ How endometriosis can spread all over your body - including your eyes➡︎ Why more people need to know about the “endometriosis rainbow”➡ How to best advocate for yourself if you think you’ve got the condition📕 Chapters(0:47) What is endometriosis?(3:43) When will we have a cure?(4:38) Why endo is chronically underfunded(6:18) How many people really have endo?(10:40) The 4 stages of endo(18:43) How far can endo spread?(21:13) Why it’s not just a ‘women’s health’ issue(27:28) How medicine is getting it so wrong(31:20) What is excision surgery?(35:41) The impact of endo on someone’s life(39:32) The role of diet and nutrition(48:28) Why endo is linked to other chronic conditions(50:02) How to best advocate for yourself📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with Dr Jill IngenitoInstagram: https://www.instagram.com/drpelvicpaindo/ 🔥 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.

Apr 11, 2025 • 57min
Master These Mental Health Tricks For A Better Life | Dr Julie Smith
💬 “If you start treating yourself as someone you care about, then you can turn things around” ~Dr Julie⚡️ Dr Julie Smith is a clinical psychologist, bestselling author and content creator. She’s become the go-to online resource for mental health tips and tricks (you may have seen her viral videos on TikTok and Instagram). ⚡ In this episode Julie and I explore how to master your mental health, avoid burn out and navigate the challenges of modern life.🎧 Stay tuned to find out:➡ How to reframe negative emotions - and stop judging yourself for feeling them➡︎ Why society has set us up for burn out - and how to look after yourself better➡︎ Why you can’t ever live a life without regrets➡︎ How people-pleasing is destroying your mental health➡︎ Why you can’t just “stop caring what people think”📕 Chapters(0:47) How Dr Julie got started(3:08) How to navigate grief(6:00) Reframing negative emotions(9:26) Why we’re all burnt out right now(21:15) Choosing the regrets you can live with(28:38) How to stop people-pleasing(35:59) There is no “you”(37:58) Your thoughts are not you(42:58) How to deal with negative emotions(45:27) Self-diagnosis in the age of social media(48:00) Mental health myths(50:55) How society can protect mental health better(52:58) Does everyone need a therapist?(54:37) Is mental health becoming a productivity obsession?📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with Dr Julie SmithTikTok: https://www.tiktok.com/@drjulie Instagram: https://www.instagram.com/drjulie/ 🔥 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.

Apr 4, 2025 • 53min
Nutrition Science Is Changing - Here’s What You Need to Know | Dr Sarah Berry
💬 “How you eat is so important, the time of day, how fast you eat, the ordering of the meal, how much sleep you’ve had” ~Dr Sarah Berry⚡️ Dr Sarah Berry is a nutrition scientist at King’s College London, and Chief Scientist at ZOE. Her main areas of expertise revolve around the hot topic of precision or personalised nutrition.⚡ In this episode Sarah and I explain why people can have such wildly different responses to food - from how many calories you absorb to your blood glucose response and more.🎧 Stay tuned to find out:➡ Why the calorie label on your food isn’t telling you the whole story➡︎ How eating too fast could be the cause of your weight problems➡︎ Why general dietary guidelines aren’t working (or being followed)➡︎ How stress, sleep and many other factors can change your response to food➡︎ Why the timing of your meal is important and how to fast the easy way📕 Chapters(0:44) The science of precision nutrition(5:03) Why calories are confusing(11:44) What happens when you chew more(22:08) Is personalised nutrition a rich person’s game?(27:55) The problem with assessing health biomarkers(37:13) Gut advice(42:25) Keto/animal based diets(47:28) Food timing & chrononutrition📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with SarahLinktree: https://linktr.ee/drsarahberry Instagram: https://www.instagram.com/drsarahberry/ Check out Sarah on the ZOE podcast: https://link.chtbl.com/qtlGNpak🔥 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.

Mar 28, 2025 • 1h 5min
Why 80% Of Alzheimer’s Cases Could Be Prevented | The Brain Docs
💬 “If we focus on our cognitive health early on, about 80% of dementias could be prevented” ~The Brain Docs⚡️ The Brain Docs are Drs Dean and Ayesha Sherzai. They are neurologists and codirectors of the Brain Health and Alzheimer’s Prevention Program at Loma Linda University Medical Center. They’re also the authors of ‘The Alzheimer’s Solution’ and ‘The 30-Day Alzheimer’s Solution’.⚡ In this episode The Brain Docs and I take a deep dive into brain health. We explain why it’s so important you start protecting your brain NOW - in your 20s, 30s and 40s - if you want it to start health and dementia free.🎧 Stay tuned to find out:➡ The 14 lifestyle changes you can make today to supercharge your brain➡︎ How up to 80% of Alzheimer’s cases could be prevented➡︎ Why “idea density” matters in protecting your brain health➡︎ The kinds of food you need to be eating for strong brain function➡︎ How Alzheimer’s-related brain changes can begin decades before symptoms appear📕 Chapters(1:14) Why Alzheimer’s prevention starts at an early age(3:53) The dramatic impact of lifestyle on brain health(12:35) Are we close to reversing Alzheimer’s?(16:46) Can Ozempic cure Alzheimer’s?(18:32) Why you should find out your dementia risk(29:09) LDL Cholesterol’s impact on brain function(34:30) When pseudoscience creeps in(39:24) The importance of sleep(43:17) How our mouth hygiene affects dementia risk(45:49) Understanding food and brain health(52:27) Does creating make your brain better?(55:12) Why women get Alzheimer’s more than men(1:03:34) Optimism and hope📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with The Brain Docs:YouTube: https://www.youtube.com/c/TheBrainDocs Instagram: https://www.instagram.com/thebraindocs/ 🔥 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.

Mar 21, 2025 • 48min
How Human BODY PARTS Are Being Illegally Traded Around the World | Scott Carney
💬 “ We are basically farming poor people for their organs, and that is dystopian.” ~Scott Carney⚡️ Scott Carney is an investigative journalist and author of “The Red Market”, where he investigates the macabre underworld of the global body trade. Scott is also a well-known YouTuber, where he exposes and debunks science grifters.⚡ In this episode Scott and I explore the shocking size of the illegal organ trade, the deep inequities that lead people to sell their organs - and why human body parts are more sought after than ever.🎧 Stay tuned to find out:➡ Why entire villages are selling their kidneys!➡︎ The questionable ethics of some of medicine’s greatest advancements➡︎ The real-life horror story of a sadistic blood broker➡︎ Why the poorest people in the world are most at risk of being exploited➡︎ How Scott helped to shut down surrogacy houses in India📕 Chapters(0:45) What is the Red Market?(4:40) How much money is being made?(7:13) Morally questionable medical breakthroughs(13:44) Kidney villages(16:46) Are people really kidnapped for kidneys?(22:38) Corruption within healthcare(26:33) How would you source an illegal organ?(28:45) The Burke and Hare murders(35:06) The forced surrogacy industry(39:59) The biggest thing Scott’s uncovered(42:14) Threats to Scott’s life for his work(44:24) What is being done to tackle the Red Market?📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with Scott:YouTube: https://www.youtube.com/@sgcarney/ Instagram: https://www.instagram.com/sgcarney/📕 Check out Scott’s other books:-Dream: The Art & Science of Slumber-The Vortex-The Wedge-What Doesn't Kill Us-The Enlightenment Trap🔥 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.

Mar 14, 2025 • 43min
Is Everyone Taking Steroids Now? | Noel Deyzel
💬 “ My mission is to help save people from a lot of the mistakes that I have made.” ~Noel Deyzel⚡️ Noel Deyzel is a bodybuilder and fitness influencer, known for his openness about his steroid use. He’s amassed millions of followers online, discussing diet and exercise strategies, and spreading messages about positive mindset and motivation.⚡ In this episode Noel and I explore the rising use of performance enhancing drugs in the fitness space, the impact this is having on male beauty standard - and why he’s cut back on everything.🎧 Stay tuned to find out:➡ How people are being more open about steroid use - and why that’s good AND bad➡︎ The risks teenagers as young as 16 are taking with their health in pursuit of muscle➡︎ The two major life events that have made Noel completely reconsider his life choices➡︎ The best and worst supplements to spend your money on➡︎ What “cheat day” looks like for Noel📕 Chapters(0:42) When Noel was skinny(1:43) Distorted beauty standards in fitness(5:18) The “fake natty” epidemic(7:31) The responsibility of being an “influencer”(10:31) Facing health consequences of steroids(20:40) There are no quick fixes(22:56) A simple supplement guide(30:07) The gut-muscle connection(32:14) Mindset and motivation(35:03) Noel’s cheat meal(36:58) Worst fitness trends(37:46) Most overrated supplement(38:43) Most underrated supplement(39:21) Most jacked person Noel’s ever met📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with Noel:Instagram: https://www.instagram.com/noeldeyzel_bodybuilder/ YouTube: https://www.youtube.com/@NoelDeyzel/ 🔥 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.

Mar 7, 2025 • 53min
Memory Glitches: Can You Trust What You Remember? | Charan Ranganath
💬 “ Form memories with intention - and make the decisions in daily life that will give you the memories you want to hold onto.” ~Charan Ranganath⚡️ Charan Ranganath is a Professor of Psychology and Neuroscience and director of the Dynamic Memory Lab at the University of California at Davis. He’s also the author of Why We Remember: The Science of Memory and How it Shapes Us.⚡ In this episode Charan and I explore how your memory actually works and how to create a life worth remembering.🎧 Stay tuned to find out:➡ How scientifically accurate the movie Inside Out is when it comes to memory➡︎ How memories can degrade and become distorted over time➡︎ Why childhood memories are so hard - or impossible - to hold onto➡︎ How to be more intentional with your memory➡︎ The science of deja vu, PTSD, dreams and aphantasia📕 Chapters(0:34) The science of ‘Inside Out’(2:39) How memories degrade over time(5:56) When life “flashes before your eyes”(8:34) Remembering our dreams(12:30) Childhood memories(18:23) How false memories are made(22:51) Gaslighting(26:18) Why we fixate on negative memories(28:57) PTSD and traumatic memories(35:49) Is modern tech making our memory worse?(38:56) How to improve your memory(46:05) The science of deja vu(49:05) Aphantasia: How some people have no inner monologue📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with Charan:Instagram: https://www.instagram.com/thememorydoc/ Website: https://charanranganath.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 🎙️ An OG Podcasts production.

Feb 28, 2025 • 54min
Zen Monk’s Guide To Slowing Down & Enjoying Life | Haemin Sunim
💬 “ When you slow down and actually appreciate what we already have, that is the path to true happiness.” ~Haemin Sunim⚡️ Haemin Sunim is a Zen Buddhist Monk and author of three books - all of which focus on mindfulness, self compassion and finding peace in a busy world.⚡ In this episode Haemin and I explore the teachings of Zen Buddhism, and learn how they can be integrated into our daily lives.🎧 Stay tuned to find out:➡ How to slow down and stop living in a constant state of busyness➡︎ How to jump off the hedonic treadmill and stop clinging to cravings and desires➡︎ Why people with a greater sense of purpose live longer➡︎ Why spirituality and science are more closely linked than you realise➡︎ How to deepen your happiness today, even if you only have 5 seconds to spare📕 Chapters(0:32) The teachings of Zen Buddhism(3:45) Reincarnation and previous lives(5:05) Why we all feel lost right now(10:51) Random acts of kindness(12:44) Why we all need to slow down(17:22) Getting off the hedonic treadmill(19:23) Starting a mindfulness/meditation practice(21:47) The impact of stress on physical health(24:52) Quick ways to practice mindfulness(31:29) The “I don’t know” mindset(36:17) When things don’t go your way(42:33) How to be more lucky(45:12) Are spirituality and science at odds?(47:38) How to stop clinging to desires(50:48) Teaching our children self-acceptance📱 Connect with me:TikTok: https://www.instagram.com/drkaranrajanInstagram: https://www.tiktok.com/@dr.karanr📱 Connect with Haemin:Instagram: https://www.instagram.com/haemin_sunim/ Website: https://www.haeminsunim.com/ 📚 Haemin’s books:The Things You Can See Only When You Slow DownWhen Things Don’t Go Your WayLove for Imperfect Things🔥 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.

Feb 21, 2025 • 1h 1min
Make America Healthy Again: Toxic Food or Toxic Information? | Dr Jessica Knurick
In this engaging discussion, Dr. Jessica Knurick, a nutrition scientist and dietician known for debunking health misinformation, tackles the Make America Healthy Again movement. She critiques its reliance on sensational claims about food dyes and seed oils that distract from systemic public health issues. Jessica reveals the erosion of trust in science, the problem with focusing solely on ingredients, and how misinformation affects infant nutrition. Listeners will learn to spot health propaganda and understand why a broader look at public health policies is essential.
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