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Turkey Time! Sleep Time! Vitamin D and Tryptophan

December 02, 2025

Are you staring at the ceiling each night, unable to sleep as morning approaches? The holidays bring joy—but also jam-packed schedules, family dynamics, money worries, and endless lists. No wonder sleep becomes impossible this time of year. If counting sheep isn't cutting it anymore and holiday stress is keeping you wired, your body might be sending you a message—and the answer could be simpler than you imagine. As chiropractors practicing chiropractic care, we know that wellness can go past the spine care to include nutrition and exercise and more. Your sleep quality impacts everything from your immune system to your back pain levels, which is why we're excited to share some very curious research about two nutrition-based sleep helpers: tryptophan and vitamin D3.

VITAMIN D3: YOUR SLEEP-WAKE CYCLE'S BEST FRIEND

Vitamin D3 for bones? That's just the beginning. Think again! Recent research by Wu and colleagues reveals that vitamin D3 plays a crucial role in regulating your body's stress response system—particularly your hypothalamic-pituitary-adrenal (HPA) axis. When sleep gets interrupted (hello, holiday anxiety!), this system goes off the track, triggering inflammation and throwing your gut health off balance. (1)  Here's the interesting part: the study found that vitamin D3 supplementation helps bring back this delicate balance, helping you sleep better at night while keeping your immune system strong. Think of it as a reset button for your body clock—right when the holidays are throwing everything off balance.

TRYPTOPHAN: NATURE'S SLEEP SIGNAL

Tryptophan: it's not just about turkey-induced naps. Wong and colleagues found that tryptophan, especially when blended with prebiotics, works through a fascinating pathway—your gut. (2) By decreasing inflammation and boosting healthy gut bacteria, tryptophan helps your body make the right sleep-promoting chemicals at the right time. Your gut literally communicates with your brain about when to sleep, and tryptophan helps ensure they're speaking the same language—even when holiday stress overwhelms everything else.

THE BOTTOM LINE

Sleeping better doesn't require complicated medications. Supporting your body with vitamin D3 for hormonal balance and tryptophan for gut-brain communication can make all the difference this holiday season.

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