Diary of a CEO Health and Wellness Episodes Guide

Dr. Tim Spector — "Everything You Know About Food Is Wrong"

Professor Tim Spector, founder of the ZOE nutrition study and one of the world's most-cited scientists, dismantled popular nutrition myths over a full 1.5-hour episode. He explained why calorie counting is largely useless, why identical twins respond differently to the same food, and why the microbiome is the missing piece in most nutrition advice.

Key insight: There is no universal "healthy diet." Your body's response to food is highly individual. The same banana that spikes one person's blood sugar might barely register for someone else.

Action step: Eat 30 different plants per week (not 30 servings — 30 different types). This single habit dramatically improves gut diversity.

Listen if: You're confused by contradictory nutrition advice and want a science-first framework.

Dr. Chris van Tulleken — "Ultra-Processed Food Is Destroying Your Body"

This episode went viral for good reason. Dr. van Tulleken, an infectious diseases doctor who conducted a self-experiment eating 80% ultra-processed food for a month, explained what happened to his brain, gut, and body composition. He presented brain scans showing that ultra-processed food creates the same neural pathways as addictive substances.

Key insight: Ultra-processed food isn't just "unhealthy" — it's engineered to override your satiety signals. You're not weak-willed; the food is designed to make you overeat.

Action step: Apply the "grandmother test" — if your grandmother wouldn't recognize an ingredient, think twice. Focus on displacing processed food with whole food rather than trying to eliminate it through willpower alone.

Listen if: You struggle with overeating and want to understand why it's not a willpower problem.

Matthew Walker — "The Devastating Effects of Sleep Deprivation"

Professor Matthew Walker, neuroscientist and author of Why We Sleep, delivered what many listeners call the most life-changing 1.5 hours on the podcast. He walked through the data on what happens to your immune system, heart, cognitive performance, and emotional regulation when you sleep less than 7 hours. The statistics are genuinely alarming.

Key insight: After 17-19 hours without sleep, your cognitive impairment is equivalent to being legally drunk. Most people who say "I function fine on 6 hours" are too impaired to realize they're impaired.

Action step: Keep a consistent wake time — even on weekends. This anchors your circadian rhythm more effectively than any supplement or sleep hack.

Listen if: You sacrifice sleep for productivity and need a wake-up call (pun intended).

Dr. Rangan Chatterjee — Sleep, Stress, and Recovery

Dr. Chatterjee, a recurring guest and one of the UK's most well-known GPs, took a more holistic approach to sleep. Rather than focusing purely on sleep science, he connected sleep quality to daytime stress, relationship health, and sense of purpose. His "4 pillar" framework — sleep, food, movement, relaxation — provides a practical structure for improving all four simultaneously.

Key insight: Your sleep quality is determined by what you do during the day, not what you do in the last hour before bed. Morning sunlight, movement before noon, and managing afternoon stress have more impact than any evening routine.

Action step: Get outside within 30 minutes of waking. Natural light exposure in the morning sets your circadian clock for better sleep 16 hours later.

Listen if: You've tried sleep hygiene tips and they haven't worked — this addresses root causes.

Dr. Gabor Maté — "The Root Cause of Most Illness"

Dr. Maté, physician and author, spent the full 1.5 hours connecting childhood trauma to adult health outcomes — both mental and physical. He explained how unresolved emotional pain manifests as autoimmune conditions, addiction, and chronic inflammation. Bartlett was visibly moved during several moments of this conversation.

Key insight: The question isn't "Why the addiction?" but "Why the pain?" Most self-destructive behaviours are coping mechanisms for unprocessed trauma. Treat the root cause, not the symptom.

Action step: Practice the "compassionate inquiry" technique: when you notice a negative behaviour pattern, ask yourself "What am I really feeling right now?" without judgment.

Listen if: You recognize patterns in your behaviour that you can't seem to break despite knowing better.

Professor Steve Peters — "The Chimp Paradox"

The psychiatrist behind "The Chimp Paradox" — who has worked with Olympic athletes and Premier League teams — explained his model of the mind in accessible terms. The "chimp" (emotional brain) vs. "human" (rational brain) framework gives you a practical way to understand why you self-sabotage and how to manage emotional hijacking in real time.

Key insight: You can't control your chimp (emotional reactions), but you can manage it. The first emotional response isn't a choice — what you do in the next 10 seconds is.

Listen if: You make impulsive decisions you regret and want a framework for emotional regulation.

Dr. Peter Attia — "How to Live Longer and Healthier"

Attia, a physician focused on longevity science, presented his framework for what he calls "Medicine 3.0" — proactive health optimization rather than reactive disease treatment. He covered the four horsemen of chronic disease (heart disease, cancer, neurodegenerative disease, and metabolic dysfunction) and specific, testable strategies to reduce risk for each.

Key insight: Exercise is the most powerful longevity drug that exists. Nothing else — no supplement, no diet, no medication — has as broad and significant an effect on healthspan as consistent physical activity.

Action step: Prioritize zone 2 cardio (conversational pace) for 150+ minutes per week and strength training 3x per week. This combination addresses the largest number of mortality risk factors.

Listen if: You want an evidence-based framework for living not just longer, but better.

Dr. Andrew Huberman — Neuroscience of Performance

Huberman, the Stanford neuroscientist, covered a wide range of topics from dopamine management to cold exposure to focus protocols. His practical approach — specific protocols you can implement immediately — made this one of the most saved and shared episodes.

Key insight: Dopamine is not the "pleasure molecule" — it's the molecule of motivation and anticipation. Managing your dopamine baseline through deliberate practices (cold exposure, delayed gratification, limiting phone use) directly impacts your ability to focus and feel motivated.

Action step: Try the "dopamine reset" — one day per week with minimal stimulation (no social media, no music while exercising, no snacking). This recalibrates your baseline.

Listen if: You feel chronically unmotivated or struggle with focus and want neuroscience-backed solutions.

Dr. Will Bulsiewicz — "The Gut Health Revolution"

Gastroenterologist Dr. Bulsiewicz made a compelling case for the gut microbiome as the foundation of overall health. He connected gut health to immunity, mental health, skin conditions, and metabolic function — and provided a clear framework for improving it through diet rather than expensive supplements.

Key insight: Your gut microbiome is like a garden. Diversity is health. Fibre is the fertilizer. Processed food is the pesticide.

Action step: Start with fermented foods — yoghurt, kimchi, sauerkraut, kefir. One serving per day has a measurable impact on gut diversity within weeks.

Listen if: You have digestive issues, skin problems, or low energy that you suspect might be gut-related.

Dr. Mindy Pelz — Fasting, Hormones, and Women's Health

Dr. Pelz addressed a critical gap in health content: how fasting, nutrition, and exercise advice differs for women based on their hormonal cycle. She explained why protocols designed for (and tested on) men can actually harm women's health, and presented a cycle-syncing approach to fasting and training.

Key insight: Women's metabolism, insulin sensitivity, and cortisol response change throughout their menstrual cycle. A one-size-fits-all approach to diet and exercise ignores fundamental biology.

Action step: Track your cycle and notice how your energy, appetite, and exercise performance change at different phases. Then adjust your approach accordingly rather than fighting your biology.

Listen if: You're a woman who's tried health protocols that work for men but don't seem to work for you.