Mar 22, 2026Metabolic Health

Artificial Light at Night and Metabolic Risk: What We Know

Bedroom and outdoor artificial light at night are linked to obesity, metabolic risk, and depression. Here is what the studies show—and cannot prove.

light exposuremetabolic syndromecircadian rhythmsleep disruption

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Mar 16, 2026Sleep

Slow-Wave Sleep May Affect Insulin Resistance Before Glucose

A first RCT meta-analysis found disrupted slow-wave sleep raised insulin resistance without raising glucose. What that means—and what remains unproven.

slow-wave sleepinsulin resistancesleep disruptiongrowth hormone

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Feb 24, 2026Sleep

The 8.3% Productivity Myth: What the Science Actually Shows

Someone online claimed fixing your sleep and blood glucose adds 30 free workdays per year. We reviewed the research. The 8.3% figure is completely made up.

circadian rhythmsleep qualitycognitive functionblood glucose

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