¶ Longevity / Healthspan Composites

¶ Summary

Composite “longevity” metrics can be useful — but they’re slow, noisy, and easy to over-interpret. Use them to validate broad lifestyle shifts, not day-to-day decisions.

¶ What to Track

• Primary: functional metrics (sleep, fitness, body composition, BP) that change faster.
• Optional: epigenetic clocks or pace-of-aging measures on a long cadence.

¶ Common Interventions

• High-leverage lifestyle consistency: Lifestyle & Wellness
• Cardiometabolic fundamentals: Exercise, Nutrition, Sleep
• Biomarker overview: Biomarkers of Aging

¶ First Experiment

Choose one broad lifestyle change you can sustain for 12+ weeks (sleep timing, training consistency, or diet pattern), track faster metrics weekly, and use slow composites only as a secondary check.