#155 – Sleep & Nature’s Call
Matt explores nocturia, the clinical condition of waking at night to urinate, challenging the assumption that the bladder is solely at fault. Using a measuring jug to illustrate bladder capacity, Matt explains that the bladder is usually just a messenger. He details how age-related drops in nocturnal vasopressin, cardiovascular issues, sleep apnea, and primary insomnia drive awakenings that disproportionately disrupt restorative deep sleep during the first half of the night.
He goes on to evaluate dietary factors and remedies, dispelling the myth of drinking eight glasses of water daily while noting blunted thirst in older adults. He highlights how excess dietary sodium, evening alcohol, and late hydration increase nocturnal urine volume. Finally, Matt outlines evidence-based takeaways, recommending shifting fluids to earlier in the day, reducing salt intake, maintaining a two-day frequency-volume diary, and addressing underlying sleep disorders.
Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.
In a supplement industry where trust is critical, Matt uses podcast supporter Puori. Their protein powders are free from hormones, GMOs, and pesticides, with every single batch third-party tested for over 200 contaminants. For protein you can trust, save 20% at puori.com/mattwalker.
Another of this week's sponsors, AG1, is one that Matt relies upon for his foundational nutrition. Their new science-backed Next Gen formula features upgraded probiotics, vitamins, and minerals. Start your subscription today to get a FREE bottle of Vitamin D3+K2 and 5 free travel packs with your first order at drinkag1.com/mattwalker.
As always, if you have thoughts or feedback you’d like to share, please reach out to Matt:
Matt: Instagram @drmattwalker, X @sleepdiplomat,
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