Supplements — Contradicted
Does vitamin D supplementation do anything if you're not deficient?
TL;DR If your vitamin D level is already adequate (roughly above 20 ng/mL, and most non-deficient people are), taking a supplement
Do continuous glucose monitors help people without diabetes?
TL;DR For people without diabetes or prediabetes, continuous glucose monitors (CGMs) mostly show what researchers already knew: healthy bodies handle glucose within a fairly narrow, self-correcting range. Studies like the one from Stanford's Snyder Lab (Hall
Latest
Skin — Promising
Does vitamin C serum actually brighten skin and fade dark spots?
TL;DR Topical L-ascorbic acid (the active form of vitamin C) has real, published evidence for reducing hyperpigmentation and improving overall skin tone,
Supplements — Promising
Does ashwagandha actually lower stress and cortisol?
TL;DR Several small randomized trials — most using standardized root extracts like KSM-66 or Sensoril at 240–600 mg/day for 8 weeks
Devices — Thin
Are hyperbaric oxygen therapy chambers worth it for recovery and longevity?
TL;DR Hyperbaric oxygen therapy (HBOT) has strong evidence for a short list of medical conditions — decompression sickness, carbon monoxide poisoning, non-healing diabetic
Devices — Promising
Does the Oura ring actually measure anything useful? The accuracy of consumer sleep and recovery trackers
TL;DR The Oura ring is genuinely good at two things: resting heart rate and heart rate variability, where it correlates closely with ECG
Skin — Promising
Does bakuchiol actually work like retinol?
TL;DR Bakuchiol, a compound extracted from Psoralea corylifolia seeds, does appear to improve fine lines, pigmentation, and skin firmness in a way comparable
Supplements — Promising
Are collagen peptides worth taking for your skin? What the meta-analyses actually found
TL;DR Yes, there's real signal here — but temper your expectations. A 2021 systematic review and meta-analysis in the Journal of
Supplements — Promising
Does creatine do anything besides build muscle? The evidence on cognition, aging and recovery
TL;DR Yes — creatine monohydrate's benefits go beyond strength and muscle mass, but the effect sizes are smaller and the evidence is
Supplements — Promising
Is magnesium glycinate worth it for sleep? Separating the hype from the trials
TL;DR Magnesium glycinate is a reasonably well-absorbed, gut-friendly form of magnesium, and magnesium deficiency is genuinely linked to poorer sleep quality
Devices — Thin
Does whole-body cryotherapy actually do anything?
TL;DR Whole-body cryotherapy (WBC) has a modest, mostly short-lived effect on perceived muscle soreness after exercise, but the evidence for meaningfully
Devices — Promising
Do cold plunges actually work, and what for?
TL;DR Cold water immersion has decent evidence for two narrow things: reducing perceived muscle soreness after intense exercise (a 2012 Cochrane review of
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