by David Rönnlid
Hi! I am David Rönnlid, a med student from Uppsala, Sweden. I am exploring the ins and outs of health and medicine and would love to have you with me on this journey! From this podcast, you can expect conversations with researchers, clinicians, and other experts in health and medicine. Welcome! (The content provided on this page is for informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment.)
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Publishing Since
9/16/2024
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October 5, 2025
<p>🌍 How can we align our lives — and our societies — with our body clocks?</p><p>Poor sleep and circadian misalignment don’t just make us tired — they impair several aspects of our metabolic health. I sat down with Jonathan Cedernaes, M.D., Ph.D., and explored what we can do about it: from personal daily habits to systemic policy reforms. Sleep quality and quantity isn’t just about recovery — it’s a public health issue.</p><p>We dive deep into:</p><p>✅ Daily habits that keep your circadian rhythm aligned</p><p>✅ Why sleep timing is as important as sleep duration</p><p>✅ How late nights and irregular schedules impair metabolism and long-term health</p><p>✅ Policy changes that could protect circadian health at a population level — from school start times to shift work regulations</p><p>✅ The promise of circadian science for future treatments and prevention strategies</p><p>💡 What do you think matters more for our collective health: better personal habits or policy reforms?</p><p>#SleepScience #CircadianHealth #Metabolism #PublicHealth</p><p><br></p><p>Sleep science group: https://www.facebook.com/groups/495466987134152/</p><p>Connect with Jonathan on social media:</p><p>X: https://x.com/jcedernaes</p><p>IG: https://www.instagram.com/sleepydrcedernaesclocks/</p><p><br></p><p>Episode chapters:</p><p>00:00:00 Introduction</p><p>00:02:05 Sleep as a Driver of Motivation and Healthy Habits</p><p>00:04:15 Weekend Catch-Up Sleep: Benefits and Limits</p><p>00:07:50 Sleep, Metabolic Health, and Obesity Links</p><p>00:10:13 Sleep Disruption and Neurodegenerative Disease</p><p>00:12:53 Mechanisms: How Neurodegeneration Impairs Sleep</p><p>00:18:30 Supplements, Exam Stress, and Slow-Wave Sleep</p><p>00:20:01 The Body's Master Clock in the Brain: The Suprachiasmatic Nucleus</p><p>00:23:20 Light, Retina, and the Body’s Internal Timekeeping</p><p>00:43:16 Late-Night Eating and Sleep Quality</p><p>00:46:00 Heart Rate Variability: What It Really Tells Us</p><p>00:52:10 Short Sleepers, Long Sleepers, and Individual Needs</p><p>01:05:22 Circadian Misalignment: Jet Lag and Shift Work</p><p>01:19:44 Sleep and Mental Health Connection</p><p>01:33:11 Diet Timing, Fasting, and Circadian Rhythm</p><p>01:43:52 Exercise After Sleep Loss: Helpful or Harmful?</p><p>01:56:20 MicroRNAs, Sleep Loss, and Neurodegeneration Risk</p><p>02:14:36 AI, Research, and Sleep Science in the Future</p><p>02:22:06 Summary of most important takeaways from the conversation</p>
September 7, 2025
<p>Most of us think of different types of cholesterol as either “good” or “bad.” But the reality is more complex.</p><p><a href="https://www.linkedin.com/in/ACoAAAtMVkMByg_K47jUvzPX9BINng35vADpulc" target="_blank" rel="ugc noopener noreferrer">Daniel Elías-López, Endocrinologist, Ph.D</a>, is a Mexican endocrinologist and researcher whose work spans both clinical care and public health. After years of treating patients with obesity, diabetes, and lipid disorders, he saw a limit to what could be achieved in the clinic alone. That realization led him toward research—with work aimed at generating knowledge that could inform prevention and treatment strategies for millions.</p><p>In this episode, we discuss:</p><p>- Why LDL is only part of the picture</p><p>- How elevated cholesterol can remain asymptomatic for years, and why early measurement is important for timely risk detection</p><p>- Practical, evidence-based strategies that can help lower risk for cardiovascular events</p><p>Rather than claiming to have all the answers, Dr. Daniel Elías-López shares his insights from clinical experience and research —highlighting what’s known, what’s emerging, and why prevention matters.</p><p>You can connect with Dr. Daniel Elías-López on LinkedIn: https://www.linkedin.com/in/danieleliasl/ and listen to his podcast in Spanish: https://open.spotify.com/show/31RDgmiIWXQHyHNjgBxeNe?si=6bdf7f42589f4af6</p><p>Episode chapters:</p><p>00:00:00 - Why lipoproteins are essential for human health </p><p>00:07:14 - Research motivation behind studying cholesterol particles </p><p>00:14:53 - How lipoprotein particle size affects heart risk </p><p>00:22:00 - The main types of cholesterol in the body </p><p>00:29:40 - Understanding non-HDL cholesterol and health impacts </p><p>00:36:50 - Genetics and their influence on lipid metabolism </p><p>00:44:02 - Strategies to improve current cholesterol guidelines </p><p>00:51:41 - How cholesterol knowledge translates to clinical practice </p><p>00:58:49 - Fasting versus non-fasting lipid blood testing </p><p>01:06:29 - What cholesterol levels really tell about health </p><p>01:13:40 - Additional lipid markers for cardiovascular assessment </p><p>01:20:55 - Current debates in cholesterol research and policy </p><p>01:28:30 - Impact of diet on lipid profile and heart health </p><p>01:36:10 - Future directions in lipid research and prevention </p><p>01:43:55 - Key takeaways and summary of cholesterol insights</p>
August 16, 2025
<p>Parkinson’s disease is now the fastest-growing neurological disorder in the world — and according to Dr. Ray Dorsey, it’s not just about aging or genetics. </p><p>Dr. Dorsey argues that environmental toxins — including certain pesticides, industrial chemicals, and air pollutants — are significant, modifiable risk factors for developing Parkinson’s disease. In this podcast episode, we discuss:</p><p>🔬 The evidence linking environmental toxins to Parkinson’s disease</p><p>💡 What individuals can do today to reduce their exposure to environmental toxins that research has shown are associated with increased risk for developing Parkinson's disease</p><p>🏛 The public health policy changes Dr. Dorsey advocates to address the rapid rise of Parkinson’s disease in today’s society.</p><p>Dr. Dorsey's book "The Parkinson's Plan": https://www.amazon.com/Parkinsons-Plan-Path-Prevention-Treatment/dp/1541705386</p><p>Episode chapters:</p><p>00:00:00 Episode highlight reel</p><p>00:02:11 Introducing Dr. Ray Dorsey, Parkinson’s Disease Researcher</p><p>00:04:43 Evidence Linking Long-Term Exposure to Trichloroethylene to Neurological Decline </p><p>00:08:10 Environmental Contributions to Parkinson’s Beyond Genetics </p><p>00:12:37 Communicating Risks Without Overstating the Evidence </p><p>00:16:47 Historical Use and Persistence of Paraquat in Agriculture </p><p>00:19:20 Testing Options for Potential Parkinson’s-Related Risk Factors </p><p>00:21:48 Why Parkinson’s Risk Reduction Remains a Global Challenge </p><p>00:24:51 Practical Measures to Limit Environmental Neurotoxins </p><p> 00:30:40 The Role of Policy in Reducing Harm </p><p>00:33:05 How Public Awareness Can Drive Change in Exposure </p>
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Hi! I am David Rönnlid, a med student from Uppsala, Sweden.
I am exploring the ins and outs of health and medicine and would love to have you with me on this journey!
From this podcast, you can expect conversations with researchers, clinicians, and other experts in health and medicine. Welcome!
(The content provided on this page is for informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment.)
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