GLP-1s have cardiometabolic evidence, but “longevity drug” framing is premature. The defensible angle is tracking labs and context over time.
| Lab/signal | Why log context |
|---|---|
| A1c / glucose | Timing, fasting status, weight change, diet, medication changes. |
| Lipids / ApoB if ordered | Weight loss, diet, thyroid/hormone context, medication changes. |
| Blood pressure | Hydration, sleep, stress, caffeine, weight trend. |
| Sleep / HRV / resting heart rate | Recovery context, alcohol, illness, dose timing, training load. |
| Side effects | GI symptoms, fatigue, mood, appetite, injection-site notes. |