The Diary of a CEOFatty Liver Expert: The Toxic Ingredient Silently Filling Your Liver With Fat - Dr David Unwin
CHAPTERS
- 0:00 – 2:26
String test for belly fat + the scale of the metabolic health crisis
Dr. Unwin opens with a simple at-home metabolic health check: your waist should be less than half your height. He argues that belly fat is a major red flag we’ve normalized, and that huge numbers of people have undiagnosed Type 2 diabetes with serious life expectancy consequences.
- •Waist-to-height ‘string test’ as a quick proxy for metabolic risk
- •Belly fat is more concerning than fat on limbs
- •Type 2 diabetes is often undiagnosed; people don’t know they’re at risk
- •Poorly controlled diabetes reduces life expectancy substantially
- •Packaging and advertising can mislead consumers about health
- 2:26 – 6:50
Choosing your ‘health future’: why lifestyle change is harder (especially for young people)
Unwin frames health as a set of possible futures influenced by daily decisions. He highlights a new, alarming trend: Type 2 diabetes and severe obesity appearing in people under 25, describing it as a global pandemic of poor metabolic health.
- •‘Multiple health futures’ concept and the role of behavior change
- •Young people have the biggest window to alter trajectory
- •Type 2 diabetes shifting from ‘maturity onset’ to affecting children/young adults
- •Obesity and metabolic illness becoming normalized socially
- •Public confusion from conflicting health guidance
- 6:50 – 8:06
What diabetes actually is: insulin, glucose, and artery damage
Steven asks for a clear definition of diabetes, and Unwin builds from first principles: insulin’s job is to move glucose out of the bloodstream. He explains how high blood glucose rapidly harms blood vessels and why cardiovascular disease is the classic cause of death in Type 2 diabetes—while cancer risk is also rising.
- •Insulin moves glucose into cells for energy; excess gets stored
- •High blood glucose damages artery lining (glycocalyx) quickly
- •Carbs—not just ‘sweet’ foods—raise blood glucose
- •Cardiovascular disease as a major diabetes complication
- •Diabetes is also associated with increased risk of several cancers
- 8:06 – 15:57
Fatty liver: the ‘long silent scream’ and how Type 2 diabetes develops
Unwin explains the progression from excess carbohydrate intake to fat storage in the liver and pancreas. He describes Professor Roy Taylor’s model: fatty liver drives insulin resistance, which pushes the pancreas to produce more insulin until it eventually fails—often after a decade of silent deterioration.
- •Excess carbohydrate can be converted to fat for safety
- •Fat accumulates in the liver (fatty liver) and worsens insulin resistance
- •Pancreatic fat accumulation precedes loss of insulin production
- •Type 2 diabetes often develops after ~10 years of hidden metabolic decline
- •Early intervention matters before the pancreas ‘collapses’
- 15:57 – 30:28
The turning point: a patient challenges guidelines + the low-carb experiment begins
Unwin recounts a pivotal consultation where a patient normalized her blood sugar by cutting bread/cereal/rice—without metformin. Inspired (and embarrassed by medical dismissal of online communities), he and his wife Jen ran an after-hours low-carb group with volunteers, meticulously measuring outcomes.
- •A patient achieves drug-free diabetes control and confronts Unwin’s omissions
- •Doctors’ incentives and metrics can emphasize prescribing over lifestyle
- •Jen’s role and the decision to test low-carb with volunteer patients
- •Close monitoring: liver function, weight, blood pressure, HbA1c
- •Rapid improvements that contradicted Unwin’s prior assumptions
- 30:28 – 38:21
Why ‘eat less, move more’ often fails: hunger, snacking culture, and missing protein
Unwin reflects on how he used to blame patients when conventional dieting advice didn’t work. He argues modern eating patterns—carb-heavy breakfasts and constant snacking—drive hunger and displace protein, worsening metabolic outcomes even in some thin individuals.
- •Unwin’s past reliance on drugs and simplistic diet advice
- •How carb-heavy patterns can increase hunger and cravings
- •Snacking throughout the day creates repeated sugar exposure
- •Low-carb often reduces hunger and makes fasting easier
- •Protein-first meals as a practical anchor for change
- 38:21 – 45:20
The sugar-equivalent demo: cereal, potato, banana, chocolate, and the ‘healthy’ rice shock
Using glycemic load translated into teaspoons of sugar, Unwin challenges Steven to estimate sugar equivalents in common foods. The reveal—especially for rice, cereal, and potatoes—shows why many ‘non-sweet’ starches can behave like sugar in the body.
- •Glycemic index vs glycemic load (portion-based impact)
- •Teaspoon-of-sugar equivalents as a communication tool
- •Cornflakes, potato, banana, and especially rice as high sugar-equivalents
- •Public Health Collaboration infographics translated globally
- •Why these comparisons change people’s food intuition fast
- 45:20 – 52:46
Fruit juice, chocolate, smoothies: ‘health halos’ and why people get fooled
Steven and Unwin unpack common products marketed as healthy—orange juice, dried fruit snacks, white chocolate, and smoothies. Unwin emphasizes that removing fiber/structure accelerates sugar hits, increases insulin response, and can intensify hunger cycles.
- •Orange juice as a fast sugar delivery vs whole fruit
- •Dried fruit’s concentrated sugar density
- •White chocolate as mostly sugar; ‘chocoholics’ often crave sugar not cacao
- •Smoothies can become high-sugar drinks despite a healthy image
- •Marketing language (‘real fruit juice’) can be deceptive
- 52:46 – 1:05:43
How to read labels properly: carbs become sugar (‘glucose holding hands’)
Unwin coaches on evaluating packaged foods by focusing on total carbohydrate, not just ‘added sugar.’ He explains starch digestion as glucose molecules ‘holding hands’ that get broken into sugar, and suggests real-food meals (protein + green veg + fats) as a safer default.
- •Why ‘added sugar’ alone misses the real blood sugar impact
- •Carbohydrate is the main driver—UK vs US label differences (fiber handling)
- •Starch converts to sugar during digestion (amylase)
- •Practical meal template: protein + green veg + fats (avoid sugary sauces)
- •Suspicion of ultra-processed foods with long ingredient lists
- 1:05:43 – 1:20:35
Keto as a spectrum + behavior change that sticks: the GRIN model
Unwin treats ketogenic dieting as one end of a carbohydrate spectrum and emphasizes aligning diet with personal goals (weight, diabetes control, cognition). He then introduces Jen Unwin’s GRIN behavior-change framework—Goals, Resources, Increments, Notice—to help people set actionable, motivating health plans.
- •Keto/low-carb should match goals and be adjusted experimentally
- •Many people report reduced cravings and better cognitive clarity on keto
- •GRIN: define a specific desired future, identify resources, pick small steps, notice progress
- •Consistency and accountability (social pacts) support adherence
- •Measuring outcomes (weight, labs, CGM) reinforces behavior change
- 1:20:35 – 1:39:33
Ultra-processed food addiction: honesty, abstinence plans, and avoiding ‘policing’ loved ones
The conversation turns to food addiction and the shame and secrecy it can create. Unwin shares vivid clinical stories (including extreme bread-seeking behavior) and outlines first steps: admit the problem, identify trigger foods, plan abstinence, and seek gentle support rather than judgment that drives deceit.
- •Ultra-processed food addiction can affect intelligent, high-functioning people
- •Addiction patterns: secrecy, bin-rummaging, escalation, and self-esteem damage
- •Effective support avoids policing; judgment increases deception and isolation
- •Treatment tools can include low-carb structure, CGM feedback, and (when appropriate) GLP-1 medications
- •Practical first steps: honesty, specificity, plan for abstinence, enlist gentle allies
- 1:39:33 – 1:48:15
Diet and cancer risk + the shrinking healthspan problem
Steven raises research linking sugary drinks, hyperinsulinemia, inflammation, and cancer risk, prompting a prevention-focused discussion. They broaden to healthspan decline in the UK and US, and the societal costs of ultra-processed food through healthcare burden and lost productivity.
- •Sugary drinks and high sugar intake associated with increased cancer risks in studies
- •Mechanisms discussed: hyperinsulinemia, inflammation markers, altered metabolism
- •Prevention vs treatment: avoiding diagnoses that create lifelong uncertainty
- •Healthspan declining even when lifespan rises; more years lived in poor health
- •Economic impact: large public costs tied to ultra-processed food and illness
- 1:48:15 – 2:02:52
Low-cost self-assessment and smart supplementation: magnesium, vitamin D, and ‘actionable’ screening
Unwin returns to practical tools: the waist-to-height string test and experimenting with continuous glucose monitors. He then discusses supplements cautiously—prioritizing diet first, warning about over-supplementation, and making a strong case for magnesium (including forms and effects), plus vitamin D in low-sun environments.
- •String test as a simple, cheap metabolic health indicator
- •CGMs as personalized feedback that makes dietary impact ‘unseeable’ once learned
- •Supplements: food-first approach, but modern soil/nutrition changes matter
- •Magnesium deficiency: why common, which forms to use (citrate vs glycinate/threonate)
- •Screening should be tied to clear actions, not fear or confusion
- 2:02:52 – 2:11:19
Closing: representation question, mission, and the future of Type 2 diabetes in children
In the closing tradition question, Unwin nominates David Attenborough as humanity’s representative to a more intelligent species, reflecting his concern for sustainability and biodiversity. He shares how audiences can support his work, and ends with a sobering note: pediatricians now face Type 2 diabetes as a new disease in children, with limited training to address it.
- •Answer to ‘alien ambassador’ question: David Attenborough and why
- •How to support: @lowcarbGP and Public Health Collaboration resources
- •Experimentation mindset: measure something, learn what works for you
- •CGM demonstration: stable glucose through dietary choices and stress effects
- •Type 2 diabetes emerging in children; urgent need for clinician education
