Dr Annette Bosworth, Insulin Doctor: This Is the First Sign of Dementia! The Shocking Link Between Keto & Brain Decline! (Video)

In this 24 November 2025 published video, host Steven Bartlett talks with top Keto doctor Dr. Annette Bosworth who reveals how to reverse insulin resistance, cut belly fat, avoid early dementia, why eating late spikes glucose, and the sardine-only reset for ketosis.

Dr Annette Bosworth, commonly known as Dr Boz, is an internal medicine doctor with over 2 decades of experience, who helps reverse medical problems through healthy Keto living. She educates the audience on her YouTube platform ‘Dr Boz’ and is the bestselling author of several books, including, ‘KetoCONTINUUM: Consistently Keto Diet for Life’. 

She explains:

• How keto done wrong can actually damage your brain
• The fastest way to generate ketones and reduce inflammation
• Why breakfast is the most dangerous meal for insulin resistance
• The simple test that tells you if your brain is running on fat or sugar
• The science behind the “Dr. Boz Ratio” and how it predicts healing

https://youtu.be/KVXnVe8eOkM

00:00 Intro
02:03 What Made You Who You Are Today?
03:10 Modern Medicine: Fixing vs Preventing
04:04 Predicting Chronic Illness a Decade in Advance
08:16 Best Time of Day to Eat for Health
12:52 The Biggest Issue With Insulin Resistance
14:14 Warning Signs of Excess Insulin
18:22 Do You Have Skin Tags Or Hairless Toes?
20:29 How Keto Helped My Patients Reverse Grey Hair
21:26 How to Measure Your Ketone Levels Accurately
23:01 Key Benefits of Being in Ketosis
25:06 Brain Differences on a Keto Diet vs Standard Diet
27:25 How Long Did It Take Annette to Reach Ketosis?
31:01 Can You Lift Weights on Keto?
32:25 Improved Strength and Power on Keto
34:03 Can Keto Help With Neurodegenerative Diseases?
38:26 Testing Steve’s Ketones and Blood Sugar
40:53 Testing Dr. Boz’s Ketones
42:24 How Cortisol Affects Your Metabolism
43:28 Testing Jack’s Ketone Levels
45:00 Do You Need to Fully Cut Carbs?
46:14 My Mum’s Cancer Journey With Keto
47:19 12 Steps to Stay Consistently in Ketosis
51:20 The Difference Between Men and Women on Keto
54:36 Sardines Challenge: A Keto Kickstart
57:18 What Macros You Need to Get Into Ketosis
57:54 Keto Grocery List Essentials
59:02 What About Net Carbs on Keto?
59:22 30 Days of Eating Only Sardines: What Happened
1:02:45 Does High Fat Affect the Gut Microbiome?
1:06:43 Is Your Microbiome Diverse Enough on Keto?
1:07:23 The Role of Vitamin D in Health
1:08:20 Lowering Insulin to Improve Vitamin D Levels
1:09:36 Ads
1:10:30 The Importance of Magnesium on Keto
1:11:30 The Role of Omega-3 Fatty Acids
1:11:41 Should You Take Exogenous Ketones?
1:12:11 Exogenous vs Naturally Produced Ketones
1:14:19 Putting My Mum on Keto During Cancer
1:20:27 Can Keto Reverse Cancer?
1:22:42 What Is Methylene Blue?
1:24:34 Should You Take Creatine?
1:26:48 Natural Alternatives to GLP-1 Drugs
1:28:42 How to Stop Food Cravings Effectively
1:31:32 Keeping People Motivated on Their Health Journey
1:32:44 Ads
1:34:55 They Tried to Sue Me for Fraud
1:46:41 Finding Inner Peace During Stressful Times