Sleep

Jul 13, 2026

Sleep Apnea, Insomnia, and Dementia Risk: What We Know

Do insomnia and sleep apnea raise dementia risk? A 2025 meta-analysis links both to later cognitive decline, but treatment has not proved dementia prevention.

insomnia obstructive sleep apnea osa

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Apr 29, 2026

Can Better Sleep Help You Lose Weight? What Trials Show

Can better sleep support weight loss? A 2026 meta-analysis finds modest benefits for poor sleepers, but sleep is no standalone obesity treatment.

cbt-i sleep hygiene weight loss

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Apr 6, 2026

Blue-Light Blocking Glasses for Sleep: What Trials Actually Show

Do blue-light blocking glasses improve sleep? Cochrane found very low-certainty evidence, while a healthy-adult trial found no objective benefit from evening lenses.

blue-light glasses melatonin circadian rhythm

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Apr 6, 2026

Morning Light May Matter More Than Blue Blocking Software

Blue-blocking software may improve subjective sleep, but submarine trials show that circadian-informed morning light resets the body clock more quickly.

circadian rhythm blue light exposure morning light

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Apr 6, 2026

Shiftwork Fatigue: What Mining Research Still Hasn’t Tested

After 40 years of research, mining fatigue programs still lack controlled trials for naps, caffeine, rosters, and detection tech. What evidence exists?

shift work fatigue bright light exposure circadian rhythm

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Mar 29, 2026

Rosmarinic Acid + EGCG for Sleep: One Small RCT

Can rosmarinic acid and EGCG improve sleep? One small RCT found secondary score gains but missed primary endpoints. See what the evidence supports today.

subclinical insomnia polyphenols rosmarinic acid

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Mar 28, 2026

Jet Lag for Athletes: Why Eastbound Travel Hits Harder

Travel fatigue and jet lag are different problems for athletes. Learn why eastbound travel can impair performance longer and which countermeasures have evidence.

jet lag circadian rhythm melatonin

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Mar 25, 2026

Sleep Disruption, Tau, and Alzheimer’s Risk: What We Know

Poor sleep tracks with tau and Alzheimer's biomarkers, and a randomized trial found sleep lowers CSF tau. But prevention claims remain unproven.

tau protein alzheimer's disease sleep deprivation

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Mar 24, 2026

An 8-Year Sleep Trial Tests Circadian Change’s Staying Power

An 8-year youth RCT found early circadian gains vanished by adulthood. What it says, and cannot say, about lasting sleep interventions.

circadian rhythm chronotherapy adolescent sleep

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Mar 24, 2026

Morning Light Therapy for DSWPD: What Trials Show

Morning light therapy for delayed sleep-wake phase disorder is biologically plausible, but five small trials leave dose, timing, and long-term durability unanswered.

light therapy circadian rhythm sleep disorders

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Mar 24, 2026

Can Midlife Sleep Therapy Improve Cognition? What We Know

Can CBT-I or mindfulness in midlife improve sleep and cognition? Review six trials, the apnea caveat, and the unproven dementia-prevention claim.

cbt-i mindfulness meditation slow-wave sleep

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Mar 22, 2026

Wearable Sleep Staging: Why Deep Sleep Is Hard to Measure

Can PPG, ECG, and multisensor wearables measure deep sleep? PSG studies find useful sleep trends, uncertain N3 staging, and opaque consumer algorithms at home.

sleep staging wearable sleep tracking deep sleep

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