Semaglutide has not been proven to cause restless legs syndrome, and a 2026 real-world cohort did not find a statistically significant time-to-event association between GLP-1 receptor agonist use and restless legs syndrome. Still, several mechanisms make new or worsened restless legs biologically plausible in susceptible people. Reduced food intake and gastrointestinal side effects can make […]
The 2-4am window is when your metabolism is vulnerable. Blood glucose reaches its overnight nadir, cortisol peaks at approximately 3:40am biological time, and liver glycogen stores are at their lowest. When blood sugar drops below a critical threshold, counter-regulatory hormones fire — epinephrine, cortisol, glucagon — and these stress hormones trigger arousal. In metabolically healthy
No controlled human trial has measured whether IV NAD+ infusions improve sleep. The Gindri 2024 review of 10 NAD-related RCTs evaluated fatigue, sleep, and anxiety endpoints but found evidence insufficient for firm recommendations; none of the trials used IV delivery with sleep as a primary outcome. A 2026 pilot comparing IV NAD+ to IV NR
Does NAD+ IV Therapy Improve Sleep? What the Evidence Shows Read Post »
Yes. Inflammaging – the chronic, low-grade inflammation that increases with age – can contribute to poorer sleep architecture by reducing slow-wave sleep, increasing awakenings, and lowering sleep efficiency. IL-6, TNF-alpha, CRP, and related inflammatory mediators tend to rise with aging as senescent cells and metabolic changes contribute to pro-inflammatory signaling, including the senescence-associated secretory phenotype
A 2026 meta-analysis of 20 studies found sleep deprivation reduces gut microbiome Shannon diversity in rodent models (standardized effect -1.27) and increases the Firmicutes-to-Bacteroidetes ratio in rodent models (+2.60) — a shift toward inflammation-associated species (Supasitdikul et al., 2026). Human studies showed nonsignificant trends in the same direction. A Mendelian randomization study in 386,533 individuals
Written by Kat Fu Consumer sleep trackers are reasonably accurate for detecting whether you are asleep or awake (86-93% agreement with polysomnography) but less accurate for classifying individual sleep stages (50-65% agreement). A 2024 validation study found Oura Ring Gen3 achieved 76-80% sensitivity across sleep stages – the best of three devices tested – while
How to Support Growth Hormone After Midlife Without Taking Hormones
Several structures in your eye cannot repair or regenerate themselves. Corneal endothelial cells decline from approximately 5,000 per mm² at birth to a decompensation threshold near 500 cells per mm² — and every UV exposure damages cells that cannot be replaced. Retinal melanin declines 2.5-fold over a lifetime, and the remaining melanin undergoes photooxidation, reversing
Which Parts of Your Eye Age Permanently — and What Accelerates the Damage? Read Post »
It is possible. Between 47% and 67% of postmenopausal women meet criteria for obstructive sleep apnea, and an estimated 8 to 9 in 10 may be unaware of it. In women, sleep apnea presents as insomnia, fatigue, morning headaches, and mood disturbance — not the stereotypical loud snoring associated with the condition. Progesterone loss during
Could Sleep Apnea Be Behind Your Menopause Insomnia? Read Post »
Vagus nerve stimulation may address mast cell insomnia at its autonomic root. The vagus nerve physically innervates mast cells in the gut and directly regulates their degranulation. When vagal tone is low, this regulatory input fails and mast cells release histamine and other mediators unchecked. Two randomized controlled trials of transcutaneous auricular vagus nerve stimulation
Can Vagus Nerve Stimulation Stop Mast Cell Insomnia? Read Post »
