The Diary Of A CEO with Steven Bartlett
The Diary Of A CEO with Steven Bartlett

Most Replayed Moment: The First Warning Signs Of Insulin Resistance! Check Your Skin For This

What if the first signs of insulin resistance are already visible on your body? Dr Annette Bosworth, also known as Dr Boz, is a physician and author whose work focuses on metabolic health, insulin resistance and ketogenic nutrition. In this moment, Dr Boz explains how chronically high insulin can qu

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Episode Summary

Executive Summary: The discussion argues that aging and chronic disease are driven largely by chronically high insulin from frequent eating, late meals, and processed carbohydrates. The speaker promotes shifting calories earlier in the day, lowering carbs, and using time-restricted eating or longer fasts to restore ketosis, reduce inflammation, and improve energy, focus, and metabolic health.

Main Topics: Insulin, aging, and chronic disease (Priority: 5/5): High insulin is framed as a central driver of faster aging, inflammation, fat storage, and diseases such as cancer, high blood pressure, depression, brain fog, and Parkinson’s-like brain changes. Meal timing and time-restricted eating (Priority: 5/5): The speaker emphasizes that when you eat matters: calories earlier in the day are presented as more beneficial than late-night eating, with late meals keeping insulin elevated overnight. Ketosis and ketone production (Priority: 4/5): Ketones are presented as an alternative fuel that appears when insulin drops; the goal is to create a consistent ketogenic state to support brain function and energy. Signs of insulin resistance (Priority: 4/5): Abdominal girth, skin tags, velvety/dark skin on the neck, and loss of hair on the toes/lower legs are described as physical signs of chronic high insulin. Keto continuum and fasting progression (Priority: 5/5): A staged framework is described, moving from frequent eating to carb restriction, time-restricted eating, one-meal days, and finally prolonged fasts for people with longstanding insulin resistance. Sex-specific metabolic differences (Priority: 4/5): Women are described as often taking longer to enter ketosis and as being more prone to holding onto fat, with insulin resistance linked to PCOS, hair loss, low vitamin D, and hormone disruption. Lifestyle over exercise-first solutions (Priority: 3/5): The speaker advises starting with food timing and menu changes rather than the gym, arguing that metabolic reset comes primarily from reducing insulin exposure.

Key Arguments: Frequent eating, especially late at night, keeps insulin elevated and slows recovery overnight. Processed foods and high-carb meals increase insulin and prevent the body from entering ketosis. High insulin is not just about weight gain; it contributes to inflammation, tissue growth, and debris accumulation in the brain and body. A useful marker of metabolic health is whether a person can maintain ketones during the day while fasting or eating low carb. Insulin resistance often shows up first in the abdomen and skin, making physical signs an early warning system. Women may need a slower, more individualized transition into ketosis because their bodies tend to defend fat stores more strongly. For people with years of insulin resistance, longer fasts may be needed to meaningfully lower insulin and reset metabolism.

Data Points: Late-night meal timing: One bite after 6 o’clock is described as worth ten bites before noon - Used to argue that calories consumed later in the day are metabolically more costly Time since last meal: About 8 hours - Estimated time between the interviewee’s late-night eating and waking up the next morning Carb target: Less than 20 grams - Suggested starting point for moving toward ketosis in the beginner stage Time to ketosis: By the end of the week - Average person may produce ketones within a week after dropping carbs to 20 grams Skipping first meal: By day 10 - Estimated timing for beginning to miss the first meal naturally after carb reduction Time-restricted eating window: 16:8 - Described as a later stage in the keto continuum: 16 hours fasting, 8 hours eating One-meal-a-day window: 23:1 - Another stage in the keto continuum involving 23 hours fasting and 1 hour eating Prolonged fast duration: 36 to 72 hours - Final stages of the continuum for people with long-term insulin resistance Ketone levels: 0.7 to 1.0 - Cited as example blood ketone levels in patients who are successfully fasting or low-carb Continued keto adherence: 20 out of 30 days per month - Described as the author’s own long-term ketogenic pattern during earlier years

Pivotal Quotes: "one bite of food after six o'clock is worth ten bites of food before noon" — Speaker: Explaining why earlier calorie intake is preferable for aging and metabolic health "insulin insulates" — Speaker: Simplifying insulin’s role as a storage hormone that promotes fat gain and growth "You need to take the trash out routinely" — Speaker: Using a metaphor for lowering insulin so cellular debris and inflammation can clear

Implications: The episode pushes listeners toward earlier eating, lower-carb intake, and fasting as primary longevity tools. For wellness and metabolic-health industries, it reinforces demand for ketosis, wearable/biomarker tracking, and individualized fasting guidance.

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About The Diary Of A CEO with Steven Bartlett

Steven Bartlett is a British entrepreneur, investor, and author. He’s the founder of Flight Story – a media company – and Flight Fund, an investment fund backing the next generation of category-defining businesses. He created The Diary Of A CEO to share the unfiltered pages of the personal diaries of the world’s most fascinating CEOs, experts, therapists, and leaders – with the hope that their lessons will help both you and him live better lives. DOAC is a double acronym: Diary Of A CEO, but also Dreamers, Open-minded, Awareness, and Connection.This is your corner of the internet to dream boldly, think openly, expand your awareness, and feel more connected. My New Book: https://g2ul0.app.link/DOAC IG: https://www.instagram.com/steven LI: https://www.linkedin.com/in/stevenbartlett-123

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