How Bedroom Temperature and Blue Light Affect Blood Sugar in Type 1 Diabetes

SHOW NOTES:

Neil wants to be upfront: this episode is going to sound like wellness content delivered by someone standing in a field in linen pants. He knows. He can't control how it sounds. What he can tell you is that there's actual research behind all of it, it specifically applies to T1D glucose management, and he read most of it at midnight on his phone in bed with the screen at full brightness.

Your sleep environment -- specifically temperature, light, and screen exposure -- directly affects the hormones that regulate both sleep and glucose. For T1D people, those hormones matter more because there's no backup system to compensate when they go sideways. Blue light at 10pm tells your brain it's daytime, suppresses melatonin, and raises cortisol. A warm room keeps your core temperature elevated, making it harder to drop into deep sleep. Both of these things are doing quiet work against your blood sugar while you're trying to rest.

We're in Week 5 of the While You Were Sleeping Challenge.

In this episode:

How blue light from screens suppresses melatonin and triggers cortisol at 10pm
Why your phone screen registers as "daytime" to your brain's sleep-wake system
Core body temperature and its role in reaching deep sleep stages
The research-backed temperature range for better sleep quality
One practical environmental change to make tonight that doesn't require buying anything

This Week's Challenge: Know your bedroom temperature. Tonight, put your phone face down one hour before bed. Not in another room -- just face down. See what happens.

Helpful resources and newsletter: https://yourbestt1dyear.com

Connect with Neil: TikTok: https://tiktok.com/@the.betes Instagram: https://instagram.com/thebetes Facebook: https://facebook.com/neilgreathouse LinkedIn: https://linkedin.com/in/neil-greathouse-a607b912 Website: https://yourbestt1dyear.com

Books on Amazon: Type 1 Diabetes – One Day at a Time: https://a.co/d/6UHooWJ Type 1 Diabetes – True Stories: https://a.co/d/dfIlyI1

Denne episoden er hentet fra en åpen RSS-feed og er ikke publisert av Podme. Den kan derfor inneholde annonser.

Episoder(251)

Walking With Insulin Still Working

The fear episode, faced head-on. The couch was never the real reason people with type 1 diabetes move less. The real reason is the low. So this is the safety net, built from the top shelf: the interna...

30 Sep 8min

Muscle Is Medicine // Strength Training with Type 1 Diabetes (Alex St. John, MSc)

Alex St. John is six foot five, about 295 pounds, and three years into serious lifting when type 1 diabetes showed up mid-semester of his kinesiology degree, at a blood sugar of 504. His response was ...

28 Sep 53min

"Snack" Before You Eat

The graduate seminar of movement snacks, with the loudest safety caveat of the month. A 2014 study in Diabetologia coined the term exercise snacks: short, brisk bursts of movement a few minutes BEFORE...

25 Sep 6min

The After-Dinner Ten

Meet Neil's walking partner: Cora, a 5.9-pound senior Morkie whose hips don't lie and whose top speed is best described as eventually. Every evening, Neil, his wife Gina, and Cora take the after-dinne...

23 Sep 5min

You Don't Need The Gym

Somebody sold all of us the same lie: that getting active means a membership, an hour a day, and a personality transplant. This episode formally cancels that belief system with receipts. Look at the e...

21 Sep 5min

The Movement "Snack"

For once, a study on our actual people. Published in 2026 in Diabetes Technology and Therapeutics: adults with type 1 diabetes on insulin pumps sat for six hours straight on one lab day, and on anothe...

18 Sep 5min

Three Short Walks Beat One Long Walk

Stop looking for 45 free minutes. They don't exist, and it turns out they were never the assignment. A 2013 Diabetes Care study by Loretta DiPietro compared one 45-minute walk against three 15-minute ...

16 Sep 5min

Exercising with Type 1 Diabetes // 34 Years of T1D and Still Moving (Arnie Bunch, the Blood Sugar Ninja)

Arnie Bunch has been living with type 1 diabetes since 1992, the same year Neil was diagnosed. He's a runner, the creator of the #bloodsugarninja, and the kind of friend who gives you the straight ans...

14 Sep 1h 4min