What the Latest Sleep Research Means for Your Evenings

Beware the study that measures a biomarker and asks you to imagine the outcome. Moving a number on a panel is not the same as living longer or better, and the history of medicine is littered with interventions that improved the surrogate while doing nothing, or worse, to the thing you actually cared about. Demand the hard endpoint.

Dietary fiber is the longevity lever hiding in plain sight.