Your Best T1D Year

What Type 1 Diabetes Actually Does to Your Sleep Architecture | Episode 200

SHOW NOTES: 200 episodes. Neil didn't plan on this. He definitely didn't plan on spending episode 200 explaining what your liver does at 3am without your permission. And yet here we are. This is the episode that contains the most important thing Neil has said in this entire challenge. Most T1D content talks about sleep in two ways: the safety angle (set your alarms right) or the wellness angle (get enough rest). Neither goes far enough. What the research actually shows is that T1D adults have fundamentally different sleep architecture than adults without T1D -- measurably less slow-wave sleep, higher overnight hormone levels, and a higher arousal index that keeps them closer to the surface all night. You're not bad at sleeping. You've been sleeping with a condition that literally changes how sleep works in your body. And nobody told you. This is Week 4 of the While You Were Sleeping Challenge. 200 episodes in. This one matters. In this episode: * The documented differences in T1D sleep architecture vs. non-T1D adults * What slow-wave sleep is and why T1D people get measurably less of it * What "arousal index" means and why it explains waking up tired after 7 hours * Why endocrinologists and sleep doctors don't talk to each other (but should) * Why episode 200 was the right moment to say this out loud This Week's Challenge: Tell one person about this challenge. Someone with T1D, or who loves someone with T1D. One ripple. Helpful resources and newsletter: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Connect with Neil: TikTok: https://tiktok.com/@the.betes [https://tiktok.com/@the.betes] Instagram: https://instagram.com/thebetes [https://instagram.com/thebetes] Facebook: https://facebook.com/neilgreathouse [https://facebook.com/neilgreathouse] LinkedIn: https://linkedin.com/in/neil-greathouse-a607b912 [https://linkedin.com/in/neil-greathouse-a607b912] Website: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Books on Amazon: Type 1 Diabetes – One Day at a Time: https://a.co/d/6UHooWJ [https://a.co/d/6UHooWJ] Type 1 Diabetes – True Stories: https://a.co/d/dfIlyI1 [https://a.co/d/dfIlyI1]

Bedtime Consistency and T1D: Why Timing Beats Total Hours for Blood Sugar Control

SHOW NOTES: You've been told to get eight hours. Here's what the research actually found. A 2023 study of 76 adults with type 1 diabetes tracked both CGM and sleep data for one week. The finding: sleep duration alone was not independently associated with time in range. What was? Bedtime consistency. Every extra hour of variability in bedtime was associated with roughly 10% less time in range. Your CGM noticed. It was taking notes. This episode reframes the sleep conversation for T1D: it's not just about how much you sleep. It's about when. Your body doesn't know it's Saturday. Your cortisol doesn't know it's Saturday. Only your social calendar knows it's Saturday -- and your social calendar is not in charge of your A1C. We're in Week 3 of the While You Were Sleeping Challenge. In this episode: * The 2023 T1D sleep study and what it actually measured * Why six people who each got 7 hours got six different results * What bedtime consistency means practically -- and why it matters more than total hours * Why weekend sleep timing is where this breaks down for most people * The 60-minute window and why it works This Week's Challenge: Try to go to bed within a 60-minute window of the same time, three nights this week. Not all seven. Just three. Helpful resources and newsletter: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Connect with Neil: TikTok: https://tiktok.com/@the.betes [https://tiktok.com/@the.betes] Instagram: https://instagram.com/thebetes [https://instagram.com/thebetes] Facebook: https://facebook.com/neilgreathouse [https://facebook.com/neilgreathouse] LinkedIn: https://linkedin.com/in/neil-greathouse-a607b912 [https://linkedin.com/in/neil-greathouse-a607b912] Website: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Books on Amazon: Type 1 Diabetes – One Day at a Time: https://a.co/d/6UHooWJ [https://a.co/d/6UHooWJ] Type 1 Diabetes – True Stories: https://a.co/d/dfIlyI1 [https://a.co/d/dfIlyI1]

The T1D Sleep-Blood Sugar Feedback Loop

SHOW NOTES: Bad sleep makes your blood sugar harder to manage. Worse blood sugar disrupts your sleep. Worse sleep makes your blood sugar worse. You've been running a feedback loop -- without knowing it. This is the episode where things click. Neil connects all the pieces from Weeks 1 and 2 into the full picture: the bidirectional relationship between sleep and glucose management in type 1 diabetes. High blood sugar increases overnight bathroom trips. Low blood sugar fires the alarm. Glucose variability through the night disrupts sleep architecture even without a full wake-up. And the worse you sleep, the more your insulin sensitivity drops the next day. The loop is real. And here's what nobody usually says: you can interrupt it from either side. We're in Week 3 of the While You Were Sleeping Challenge. In this episode: * The full sleep-blood sugar feedback loop in T1D, explained end to end * Why both high and low blood sugar disrupt sleep in different ways * How glucose variability affects sleep stages even without a full wake-up * Why you don't have to fix both sides of the loop at once * How to pick one end of the rope and start pulling This Week's Challenge: Pick one small thing to try before bed. Just one. An early blood sugar check, consistent bedtime two nights in a row, screens down an hour before sleep. Write down what happened in the morning. Helpful resources and newsletter: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Connect with Neil: TikTok: https://tiktok.com/@the.betes [https://tiktok.com/@the.betes] Instagram: https://instagram.com/thebetes [https://instagram.com/thebetes] Facebook: https://facebook.com/neilgreathouse [https://facebook.com/neilgreathouse] LinkedIn: https://linkedin.com/in/neil-greathouse-a607b912 [https://linkedin.com/in/neil-greathouse-a607b912] Website: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Books on Amazon: Type 1 Diabetes – One Day at a Time: https://a.co/d/6UHooWJ [https://a.co/d/6UHooWJ] Type 1 Diabetes – True Stories: https://a.co/d/dfIlyI1 [https://a.co/d/dfIlyI1]

The Dawn Phenomenon in Type 1 Diabetes: Why Your Blood Sugar Rises While You Sleep

SHOW NOTES: You went to bed at a perfect 110. No active insulin. Flat arrow. You did everything right. You wake up at 182. Nothing happened -- no low, no alarm. You just slept. Except something did happen. You just weren't awake for it. This episode introduces the dawn phenomenon: the pre-dawn hormonal surge (cortisol, growth hormone, glucagon, epinephrine) that causes your liver to manufacture and release glucose into your bloodstream between roughly 3am and 8am, every single night, without your permission. For people without T1D, the pancreas handles this automatically and they never know it happened. For T1D people, the glucose just lands -- and then we stand in the kitchen at 6am holding an insulin vial up to the light, wondering what on earth went wrong. This is Week 3 of the While You Were Sleeping Challenge. We're getting into actual mechanisms. In this episode: * What the dawn phenomenon actually is and what triggers it * Hepatic glucose output explained in plain English (and why it sounds like a Jurassic Park sequel) * Why non-T1D people never notice this happening overnight * What 34 years of blaming the insulin vial actually looked like * How to start spotting the dawn phenomenon in your own overnight CGM data This Week's Challenge: Pull up your overnight CGM graph from last night. Do you see a gradual rise starting around 3 or 4am when your blood sugar was otherwise flat? Just look. Don't change anything yet. Helpful resources and newsletter: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Connect with Neil: TikTok: https://tiktok.com/@the.betes [https://tiktok.com/@the.betes] Instagram: https://instagram.com/thebetes [https://instagram.com/thebetes] Facebook: https://facebook.com/neilgreathouse [https://facebook.com/neilgreathouse] LinkedIn: https://linkedin.com/in/neil-greathouse-a607b912 [https://linkedin.com/in/neil-greathouse-a607b912] Website: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Books on Amazon: Type 1 Diabetes – One Day at a Time: https://a.co/d/6UHooWJ [https://a.co/d/6UHooWJ] Type 1 Diabetes – True Stories: https://a.co/d/dfIlyI1 [https://a.co/d/dfIlyI1]

Why Sleep Deprivation Hits Harder When You Have T1D

SHOW NOTES: Sleep deprivation reduces insulin sensitivity in everyone. That's not a T1D-specific finding. Here's what is. In people without diabetes, the system has a feedback loop. Insulin sensitivity drops, blood sugar ticks up slightly, the pancreas compensates automatically, and the whole thing resolves before they're even awake. They make coffee, go about their day, and have no idea any of it happened. For T1D people, that feedback loop doesn't exist. The penalty just lands. This episode explains why the same sleep deprivation hits harder when you don't have a functioning pancreas to compensate -- and why T1D people have been quietly doing the backup system's job manually every single morning, often without realizing that's what they were doing. We're in Week 2 of the While You Were Sleeping Challenge. In this episode: * How a healthy pancreas automatically compensates for sleep-related insulin sensitivity changes * Why the T1D body absorbs the full 21% impact without automatic correction * What "doing the backup system's job manually" actually looks like before the first cup of coffee * The emotional reality of running on interrupted sleep while managing blood sugar * What to add to your data tracking this week This Week's Challenge: On mornings after rough nights, notice if you had to work harder -- more corrections, more frustration, numbers that were less predictable. That's the 21% showing up in real life. Helpful resources and newsletter: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Connect with Neil: TikTok: https://tiktok.com/@the.betes [https://tiktok.com/@the.betes] Instagram: https://instagram.com/thebetes [https://instagram.com/thebetes] Facebook: https://facebook.com/neilgreathouse [https://facebook.com/neilgreathouse] LinkedIn: https://linkedin.com/in/neil-greathouse-a607b912 [https://linkedin.com/in/neil-greathouse-a607b912] Website: https://yourbestt1dyear.com [https://yourbestt1dyear.com] Books on Amazon: Type 1 Diabetes – One Day at a Time: https://a.co/d/6UHooWJ [https://a.co/d/6UHooWJ] Type 1 Diabetes – True Stories: https://a.co/d/dfIlyI1 [https://a.co/d/dfIlyI1]