Course 3 of 5

Build Your First Protocol

Design a personalized, evidence-based longevity protocol step by step — from assessing your baseline to choosing interventions, setting a realistic budget, and tracking outcomes over time.

📖 5 lessons⏱ ~35 minutes📊 Intermediate🔓 100% free
Lesson 1 of 5

Assess Your Baseline

Where Are You Starting From?

A protocol without a baseline is guesswork. Before choosing a single intervention, you need to understand your current state across multiple dimensions. This isn't about perfection — it's about identifying your highest-leverage starting points.

The Four-Part Assessment

1. Functional fitness baseline: estimate your fitness (even with a timed walk or run), test grip strength and balance, and note how much and what kind of exercise you do. Low fitness carried mortality risk comparable to smoking or diabetes in a large treadmill study,[1] lower grip strength is linked to higher mortality,[2] and walking speed predicts survival in older adults.[3]

2. Metabolic snapshot: the Tier 1 panel from Course 2 (HbA1c, fasting glucose, ApoB, hsCRP and fasting insulin), plus waist size and blood pressure, which are part of the definition of metabolic syndrome.[4]

3. Lifestyle audit: Honestly assess sleep duration and quality, dietary patterns, stress levels, social connection, and substance use. The Longevity Score assessment covers all of these in a structured format.

4. Family history scan: note conditions that run in your family, such as heart disease, cancer, dementia or diabetes, and discuss them with your clinician, since family history can change which screening tests are recommended for you.

Key Concept

Your weakest dimension is your highest-leverage target. The person sleeping 5 hours a night gets more benefit from fixing sleep than from adding any supplement. The person with zero exercise gets more from a walking routine than from optimizing their omega-3 intake. Always start where the gap is largest.

📈
Longevity Score Assessment
40-question assessment across 10 dimensions — find your weakest link
→
Knowledge Check
What's the primary purpose of establishing a baseline before building a protocol?
To determine which supplements to buy first
To identify your highest-leverage starting points and track progress
To calculate your exact biological age
To compare yourself to longevity experts
Correct. A baseline serves two purposes: it reveals which dimensions of health have the most room for improvement (your highest-leverage targets), and it gives you a reference point to measure whether your interventions are actually working over time.
Lesson 2 of 5

The Intervention Pyramid

Prioritize by Evidence and Impact

Not all longevity interventions are created equal. We organize them into a pyramid where the base provides the most benefit for the least risk and cost, and the peak represents higher-cost, higher-risk, or more experimental approaches.

Base: Lifestyle Foundations

Exercise, sleep, nutrition, stress management and social connection. In a US analysis, adults with five low-risk lifestyle factors were projected to live 12 to 14 years longer from age 50 than adults with none.[5] If you do nothing else, do these.

Middle: Supplements for Specific Gaps

Once the base is solid, consider a supplement only for a specific, documented gap, and check its rating for the outcome you care about. In our Supplement Evidence Database, creatine is rated Supported for strength and lean mass with resistance training and magnesium for a small blood-pressure effect; fish oil for heart health is rated Mixed, and vitamin D for preventing cancer and heart disease in generally healthy adults is rated Not supported.

Upper: Targeted Testing and Medicines

Advanced testing (epigenetic clocks, comprehensive bloodwork), pharmaceutical interventions under medical supervision (metformin, rapamycin — both still under research for longevity), and specialized protocols based on your risk profile and biomarker data.

Peak: Experimental

Cutting-edge interventions like senolytics, peptides, NAD+ precursors at clinical doses, hyperbaric oxygen therapy, and novel compounds. These have the least evidence in healthy humans and the highest cost. Only consider these after optimizing everything below.

Evidence Note

Why the order matters. The steepest drop in mortality comes from moving out of the least active group,[6] while large supplement trials such as VITAL found that vitamin D and omega-3 did not prevent cancer or cardiovascular events in healthy adults.[7,8]

⚖️
Protocol Comparison Tool
Compare approaches side by side — lifestyle, supplement, and pharmaceutical protocols
→
Knowledge Check
According to the intervention pyramid, when should you consider supplements?
Immediately — supplements provide the most measurable benefits
After lifestyle foundations (exercise, sleep, nutrition) are established
Only if you have a specific disease or diagnosed deficiency
Supplements are unnecessary if your diet is good
Correct. The pyramid places lifestyle foundations at the base because they have the strongest evidence and greatest impact. Supplements sit in the middle tier — they address specific gaps after the fundamentals are in place, but they can't compensate for poor sleep, no exercise, or chronic stress.
Lesson 3 of 5

Choosing Supplements Wisely

The Evidence-First Approach

Supplements are heavily marketed, but few have trial evidence strong enough to justify routine use for longevity, and none has been shown to slow human aging itself. Here is how the most popular ones are rated in our database, each for a stated outcome:

What the Database Ratings Say

  • Vitamin D: rated Not supported for preventing cancer and heart disease; in the VITAL trial, 2,000 IU a day lowered neither.[7] A blood level of at least 20 ng/mL meets the needs of at least 97.5% of people,[9] so supplement for a reason, such as a documented deficiency.
  • Omega-3 (EPA/DHA): rated Mixed for heart health; in VITAL, 1 g a day did not lower major cardiovascular events or cancer.[8]
  • Magnesium: rated Supported for a small blood-pressure effect; in a meta-analysis, about 368 mg a day for three months lowered blood pressure by about 2/1.8 mm Hg.[10]
  • Creatine monohydrate: rated Supported for strength and lean mass with resistance training; in older adults, adding creatine to resistance training increased chest-press and leg-press strength more than training alone.[11]

Limited or Mixed Evidence

  • Urolithin A: in a small first-in-human trial it changed markers of mitochondrial health, but a later trial of muscle endurance missed its main goals (rated Not supported for muscle endurance).
  • Coenzyme Q10: rated Mixed for statin muscle symptoms (two meta-analyses disagree) and Early for heart failure outcomes (one trial).

How to Evaluate a Supplement

Before adding anything to your protocol, run through this checklist: Does it address a specific, documented gap in your health or bloodwork? What evidence grade does it carry (A, B, C, or D)? Is it from a third-party tested brand (USP, NSF, ConsumerLab verified)? Does it interact with any medications or other supplements you're taking? Can you measure its effect through biomarkers or functional tests?

Key Concept

One at a time. Add one new supplement at a time and give it a few weeks before adding another, so you can spot side effects and avoid a stack where you cannot tell what is doing what.

📋
Supplement Evidence Database
Counted evidence for 25 compounds, each tied to a stated outcome
→
⚠️
Supplement Interaction Checker
Check for dangerous combinations before adding to your stack
→
Knowledge Check
What's the recommended approach when starting new supplements?
Start everything at once to maximize benefits from day one
Only start supplements if your doctor specifically prescribes them
Add one new supplement at a time, a few weeks apart
Start with the most expensive supplements first since they're usually better quality
Correct. Adding one supplement at a time, a few weeks apart, lets you spot side effects and judge tolerance. Starting several at once makes it impossible to tell which one caused a change.
Lesson 4 of 5

Budgeting Your Protocol

The Real Cost of Longevity

Longevity does not have to be expensive: the habits with the strongest evidence cost little or nothing. This course gives no prices because they change quickly; use the Protocol Cost Calculator to price your own plan.

Tier 1: Lifestyle Only

Daily walking, strength work on two or more days a week, a regular sleep schedule, a Mediterranean-style diet, stress management and time with other people. This tier carries the strongest evidence.[5]

Tier 2: Targeted Supplements

Tier 1 plus supplements chosen for documented gaps (see Lesson 3), and routine bloodwork as your clinician advises.

Tier 3: Equipment and Tracking

Tiers 1 and 2 plus a gym membership or home equipment, and possibly a wearable for sleep and activity trends.

Tier 4: Advanced

Everything above plus epigenetic testing, specialist consultations and other advanced options under medical guidance. These add the most cost with the least evidence of benefit.

The Diminishing Returns Curve

Spending more does not buy proportionally more health. The biggest gains come from the free habits in Tier 1,[5] and large trials of popular supplements have mostly found no prevention benefit.[7]

💰
Protocol Cost Calculator
Price out your protocol tier by tier
→
Knowledge Check
Which tier has the strongest evidence behind it?
Tier 4: advanced testing and specialists
Tier 3: equipment and tracking
Tier 1: lifestyle habits
Tier 2: supplements
Correct. In a US analysis, five low-risk lifestyle habits were linked to 12 to 14 more years of life from age 50,[5] while large supplement trials such as VITAL found no prevention benefit.[7]
Lesson 5 of 5

Track, Iterate, Optimize

Your Protocol Is a Living Document

A longevity protocol isn't something you build once and forget. It's a system that evolves as you age, as new evidence emerges, and as your biomarkers and life circumstances change. The final skill is knowing how to track, evaluate, and adjust.

What to Track

Biomarkers: retest when your clinician advises, and look for trends rather than single readings. A single high hsCRP can reflect a passing infection; values above 10 mg/L call for a repeat test.[12]

Functional metrics: repeat simple fitness tests, such as a timed walk or run, and grip strength, and track resting heart rate if you use a wearable.

Subjective markers: energy, sleep quality, mood and recovery. They are worth noting because they are what you feel day to day.

How to Iterate

Change one variable at a time and allow time for the marker you are tracking to respond: HbA1c, for example, reflects your average blood sugar over the past three months.[13] If you change your exercise routine, your diet and two supplements at once, you will not know what made the difference.

When a biomarker isn't moving, ask: Is the dose adequate? Is the intervention actually evidence-based for this specific marker? Is something else (sleep, stress, diet) undermining the intervention? Have I given it enough time?

Key Concept

The n=1 experiment, done well. You are running a single-subject experiment on yourself. The same scientific principles apply: change one variable at a time, measure consistently, give adequate time, and interpret results in context. This is how you build a protocol that actually works for your biology, not just in theory.

📊
My Longevity Dashboard
Log lab results and protocol notes over time
→
⚗️
Protocol Builder
Generate a personalized protocol based on your goals and constraints
→
Knowledge Check
Why wait about three months before rechecking HbA1c after a change?
Labs need that long to process the sample
It is a legal requirement
It reflects average blood sugar over roughly the past three months
HbA1c only changes once a year
Correct. HbA1c reflects your average glucose over the past three months,[13] so rechecking much sooner mostly measures the period before your change.

References

  1. 1Mandsager K, et al. "Association of Cardiorespiratory Fitness With Long-term Mortality Among Adults Undergoing Exercise Treadmill Testing." JAMA Netw Open. 2018;1(6):e183605. PubMed · DOI
  2. 2Celis-Morales CA, et al. "Associations of grip strength with cardiovascular, respiratory, and cancer outcomes and all cause mortality: prospective cohort study of half a million UK Biobank participants." BMJ. 2018;361:k1651. PubMed · DOI
  3. 3Studenski S, et al. "Gait speed and survival in older adults." JAMA. 2011;305(1):50-8. PubMed · DOI
  4. 4Alberti KG, et al. "Harmonizing the metabolic syndrome: a joint interim statement of the International Diabetes Federation Task Force on Epidemiology and Prevention; National Heart, Lung, and Blood Institute; American Heart Association; World Heart Federation; International Atherosclerosis Society; and International Association for the Study of Obesity." Circulation. 2009;120(16):1640-5. PubMed · DOI
  5. 5Li Y, et al. "Impact of Healthy Lifestyle Factors on Life Expectancies in the US Population." Circulation. 2018;138(4):345-355. PubMed · DOI
  6. 6Ekelund U, et al. "Dose-response associations between accelerometry measured physical activity and sedentary time and all cause mortality: systematic review and harmonised meta-analysis." BMJ. 2019;366:l4570. PubMed · DOI
  7. 7Manson JE, et al. "Vitamin D Supplements and Prevention of Cancer and Cardiovascular Disease." N Engl J Med. 2019;380(1):33-44. PubMed · DOI
  8. 8Manson JE, et al. "Marine n-3 Fatty Acids and Prevention of Cardiovascular Disease and Cancer." N Engl J Med. 2019;380(1):23-32. PubMed · DOI
  9. 9Ross AC, et al. "The 2011 report on dietary reference intakes for calcium and vitamin D from the Institute of Medicine: what clinicians need to know." J Clin Endocrinol Metab. 2011;96(1):53-8. PubMed · DOI
  10. 10Zhang X, et al. "Effects of Magnesium Supplementation on Blood Pressure: A Meta-Analysis of Randomized Double-Blind Placebo-Controlled Trials." Hypertension. 2016;68(2):324-33. PubMed · DOI
  11. 11Devries MC, Phillips SM. "Creatine supplementation during resistance training in older adults-a meta-analysis." Med Sci Sports Exerc. 2014;46(6):1194-203. PubMed · DOI
  12. 12Pearson TA, et al. "Markers of inflammation and cardiovascular disease: application to clinical and public health practice: A statement for healthcare professionals from the Centers for Disease Control and Prevention and the American Heart Association." Circulation. 2003;107(3):499-511. PubMed · DOI
  13. 13MedlinePlus (US National Library of Medicine). "Hemoglobin A1C (HbA1c) Test." Accessed October 1, 2026. Source