Section
How sleep and stress shape your metabolic health — backed by NIH-funded research and clinical guidance.
You can be iron deficient with a completely normal blood count. Why ferritin has to be asked for, why the lab reference range is set lower than most experts would use, the alternate-day dosing finding, and the one group who should never supplement before investigation.
Researchers found that frequent micro-awakenings were associated with higher polygenic Alzheimer's risk in healthy adults aged 50 to 69, but not in younger adults. What that does and does not mean.
A study linked long-term melatonin use to 90% higher heart failure risk. It was never peer-reviewed, it studied prescription records, and the design cannot separate the supplement from the insomnia.
AD109 cut breathing interruptions by 44% in a Phase 3 trial and is now under FDA review. How it works, who it might help, and why it is not a CPAP replacement for most people.
How to lower cortisol: what genuinely regulates it, why adrenal fatigue is not a diagnosis, what the supplement evidence shows, and the red flags worth testing.
Does melatonin work? What the evidence shows for jet lag versus insomnia, why timing beats dose, the supplement quality problem, and when to see a doctor.
Why you are always tired: a step-by-step evidence-based checklist covering sleep, apnea, iron and thyroid testing, mood, habits, and when to see a doctor.
How to sleep better: the complete evidence-based guide to wake times, light, room setup, caffeine and alcohol, what to do at 3am, and when it is medical.
The science of deep sleep: what slow-wave sleep does, how much you need, why it declines with age, why your tracker's number is unreliable, and how to get more.
What causes insomnia? The common triggers — stress, habits, caffeine, health conditions — and the evidence-based first-line treatment that beats sleeping pills.