Patients arrive asking about peptides, NAD+ and rapamycin. A meaningful fraction of them are sleeping badly, and in almost every case that is the higher-leverage problem.
What short sleep does to metabolism
Experimental sleep restriction in healthy adults reduces insulin sensitivity measurably within days. It raises evening cortisol, increases ghrelin, decreases leptin, and shifts food preference toward calorie-dense options. Every one of those changes works directly against a weight protocol.
What it does to recovery
The overnight growth-hormone pulse is tightly coupled to slow-wave sleep. Fragmenting deep sleep blunts that pulse, which means the growth-axis peptides some patients are paying for are being undermined by their own sleep architecture.
The order of operations
- Screen for sleep apnea. It is common, underdiagnosed, and nothing else works around it.
- Address the obvious inputs: light timing, alcohol, late caffeine, room temperature.
- Stabilize evening glucose — 3am waking frequently tracks with a nocturnal glucose dip.
- Only then consider pharmacological support, choosing options that preserve sleep architecture.
Wearables: useful with caveats
Consumer trackers estimate sleep stages imperfectly, and staged data should be read as a trend rather than a measurement. Total sleep time and consistency are the metrics they capture reliably, and those two explain most of the variance anyway.