Summary
Your glucose can look normal while insulin is 2-4x elevated. Covers the physical signs that reveal insulin resistance (check your neck), why strength training beats cardio for metabolic health, and how a single bad night of sleep triggers insulin resistance.
Key Points
- People maintain normal glucose while insulin levels climb 2-4x higher, a compensatory mechanism that evades clinical detection
- Glucose should normalize within 2 hours post-meal; prolonged elevation suggests impaired glucose handling
- Acanthosis nigricans (darkened, textured neck skin) and skin tags signal high circulating insulin levels
- Strength training outperforms cardio for enhancing insulin sensitivity and glucose disposal capacity
- Single nights of sleep restriction provoke insulin resistance across multiple metabolic pathways
- Pilot studies show HbA1c improvements within 90 days on ketogenic protocols
- Saturated fat effects depend heavily on carbohydrate intake; harm intensifies with refined carbs
Key Moments
Sleep quality is the single best predictor of daily blood glucose on a CGM
Ben Bikman notes that when wearing a CGM, sleep quality outperforms diet and exercise as the top predictor of glycemic control on any given day.
"When I've worn CGMs, I absolutely see that the single most predictive variable of my glycemia in any given day is how did I sleep?"
Apple cider vinegar reduces blood glucose via AMPK activation and liver glucose suppression
Two tablespoons of apple cider vinegar before a starchy meal inhibits liver glucose dumping and activates AMPK, mimicking some of exercise's.
"Apple cider vinegar will inhibit that, and so it helps the blood glucose by just having the liver dump less glucose into the blood, but it also stimulates AMPK."
Fat cell number is set by early adulthood; insulin resistance makes them grow larger
Fat cell count is largely fixed after puberty. Insulin resistance drives existing fat cells to hypertrophy, and exogenous ketones may help manage.
"During infancy, childhood, puberty, we're making fat cells. And then for the most part, the number of fat cells we have is set."
