Field Guides, AI Prompts, 
Notes on Longevity.

Act as a health-education assistant. I'm going to provide my age, sex, family history, medical conditions, medications, lifestyle, and recent preventive testing. Based on established preventive-care guidelines and major modifiable risk factors, identify questions or potential blind spots I should discuss with my physician. Do not diagnose me or recommend treatment.

I'm considering [TEST]. Explain what it measures, who it is validated for, whether knowing the result typically changes medical management, potential downsides or false positives, and what major professional guidelines say about its use.

I'm considering [INTERVENTION]. Evaluate it using the WORTH framework, defined below. Distinguish evidence for biomarkers from evidence for clinical outcomes, identify known risks and uncertainties, and tell me what evidence would change your assessment. W — What gets better? Does it improve something that actually matters? O — Overall benefit: how big? Meaningful improvement or merely detectable? R — Right for me? Am I actually similar to the people likely to benefit? T — Trade-offs? Risk, cost, time, inconvenience, uncertainty. H — Higher priority? Is this more important than the risks I already have?

Help me prepare for a preventive visit with my physician. Based on what you know about me, generate the five highest-value questions I should ask about reducing my long-term cardiovascular, metabolic, cancer, and cognitive risk.

I want to improve [blood pressure / fitness / sleep / etc.]. Help me create a 12-week behavior-change experiment with one primary outcome, 2–3 behaviors to change, a reasonable measurement schedule, and criteria for deciding whether the approach is working. Flag anything that requires medical supervision.