The Evidence-Based Longevity Protocol: A Practical Framework for Applying Everything
This is the synthesis article — the practical protocol for applying the science in the IQ Healthspan library to a coherent, prioritized, evidence-based personal longevity framework. It organizes the interventions by evidence strength and impact, structures them into a practical daily and annual rhythm, and provides the decision framework for determining what to add, when, and in what order.
- The longevity protocol hierarchy has three tiers: Foundation (interventions with decades of human outcome data that are non-negotiable for everyone), Optimization (evidence-based additions that provide meaningful benefit to most people and can be layered onto the foundation), and Experimental (interventions with compelling mechanistic rationale and preliminary data but insufficient human outcome evidence — use with informed caution and physician guidance).
- Foundation tier: 7 to 9 hours of sleep with stable sleep and wake times; 150 to 300 minutes of moderate aerobic activity a week (or 75 to 150 vigorous); muscle-strengthening on 2 or more days a week; a predominantly whole-food diet minimizing ultra-processed food and added sugar; no smoking; alcohol minimization; and active social connection. These deliver most of the benefit available to any adult.
- Optimization tier, for everyone: know and manage your blood pressure (below 130/80 for most adults), cholesterol and blood sugar with your doctor; follow guideline cancer screening; get vitamins from food and meet daily intake recommendations rather than chasing blood levels; creatine monohydrate 5 g a day is well supported for muscle with training.
- Optimization tier, individual: bone density testing when guidelines recommend it, fitness testing, and treatment of confirmed hormone deficiency or menopausal symptoms with a physician. Consumer epigenetic age tests and continuous glucose monitors are optional and not validated for clinical decisions.
- The single most important principle in the longevity protocol: the foundation interventions — sleep, exercise, diet quality, and stress management — deliver most of the benefit achievable by any adult. No amount of optimization-tier supplementation compensates for a deficient foundation. Build the foundation first; then layer optimizations.
The articles in the IQ Healthspan library have covered the mechanisms, evidence, and specific protocols for every major domain of longevity science. This article synthesizes that material into a practical, prioritized framework for applying it. The framework is organized by evidence strength and practical impact — beginning with what every adult can and should do, and progressing through evidence-graded additions based on individual circumstances and goals.1
The Hierarchy: Foundation, Optimization, Experimental
Not all longevity interventions are equally supported by evidence or equally impactful per unit of effort and cost. The framework has three tiers: Foundation interventions have decades of human outcome data, large effect sizes, and near-zero risk — they apply to everyone regardless of current health status or goals. Optimization interventions have strong but more targeted evidence — they are appropriate for most health-oriented adults once the foundation is established. Experimental interventions have compelling mechanistic rationale and preliminary human data but lack the definitive human outcome trials that would establish them as standard recommendations. They require physician involvement and informed consent.
Foundation Tier: The Non-Negotiables
Sleep: 7 to 9 hours per night, stable schedule. Target consistent bed and wake times within 30 minutes of each other every day. Optimize sleep architecture by keeping the bedroom cool, dark, and quiet. Avoid alcohol within 3 hours of bed. Identify and treat sleep apnea if suspected. Review sleep hygiene before adding any sleep supplement.2
Aerobic exercise: 150 to 300 minutes a week. US guidelines advise at least 150 to 300 minutes of moderate activity (or 75 to 150 minutes of vigorous activity) a week, plus muscle-strengthening on 2 or more days, and balance training for older adults.6 Much of this can be conversational-pace (“Zone 2”) work, with some harder intervals if you enjoy them. Higher cardiorespiratory fitness is strongly linked to lower mortality, with no upper limit of benefit seen in a large treadmill study.3
Resistance training: 2 to 3 sessions per week. Non-negotiable for muscle mass, bone density, insulin sensitivity, and myokine secretion. Focus on compound movements that load multiple muscle groups (squat, deadlift, press, row, carry). Progress load over time. Tracking grip strength is a simple way to follow strength over time.
Diet: whole-food, plant-forward, protein-adequate. Eliminate ultra-processed food and added sugar. Build meals around vegetables, legumes, quality protein sources, nuts, seeds, and olive oil. Get enough protein, spread across meals: the RDA is 0.8 g/kg a day, an expert group advises at least 1.0 to 1.2 g/kg after 65, and up to about 1.6 g/kg helps with resistance training (see our protein article).
Lifestyle foundations: Complete tobacco cessation. Alcohol: less is better, and avoid it close to bedtime. Active social connection with genuine relationships. Stress management through regular aerobic exercise, adequate sleep, and deliberate recovery practices.
Optimization Tier: Evidence-Based Additions
Universal Biomarker Targets
| Biomarker | Target | Primary Intervention if Abnormal |
|---|---|---|
| ApoB | Set by your overall risk | Dietary fat modification, statin, ezetimibe, PCSK9i |
| Blood pressure | <130/80 mmHg for most adults | Exercise, sodium reduction, medication if needed |
| Fasting insulin | No agreed target; use glucose and HbA1c | Carbohydrate quality, Zone 2 exercise, TRE |
| hsCRP | <1 mg/L is lower cardiovascular risk | Exercise, weight loss, not smoking |
| 25-OH Vitamin D | Routine testing not advised if healthy and under 75 | Meet the daily intake recommendation |
| Omega-3 index | No agreed target | Fish about twice a week |
| Homocysteine | Test only if a doctor suggests it | Correct any B12 or folate deficiency |
Universal Supplements (Strong Evidence)
Creatine monohydrate: 5 g/day. One of the most evidence-backed supplements for muscle, cognitive function, and resistance training adaptation. No meaningful downside in healthy adults. Take at any time with food. Magnesium glycinate or malate: up to 350 mg elemental magnesium a day from supplements, the upper limit (NIH). Food first; supplements mainly help people whose intake is low. Omega-3: eat fish about twice a week. In the VITAL trial, 1 g a day of fish oil did not lower cardiovascular events or cancer in the general population,7 while a high-dose prescription form reduced events in people with high triglycerides and cardiovascular disease or diabetes.4 Vitamin D: the 2024 Endocrine Society guideline advises against routine vitamin D testing and against supplementing above the daily intake recommendation in healthy adults under 75.8
Individual Optimization (Physician-Guided)
Hormonal deficiency correction: TRT for men with confirmed hypogonadism; HRT for women within 10 years of menopause without contraindications. HRT is mainly used for menopausal symptoms, and TRT only for confirmed deficiency; both need individual risk assessment. Epigenetic tests of biological age vary between labs and are not validated for clinical decisions. Bone density screening (DEXA) follows USPSTF guidance: women 65 and older, and younger postmenopausal women at higher risk. VO2 max testing and progressive improvement targeting 75th percentile for age and sex.
Experimental Tier: Physician-Supervised Only
Rapamycin (rapamycin): strong animal lifespan data but no human longevity trials; dosing for this purpose is not established. Requires physician supervision, regular bloodwork monitoring, and full informed consent regarding the evidence gap. Appropriate for adults who have maximized the foundation and optimization tiers and are seeking experimental interventions. NMN and NR raise NAD+ levels in blood, but human trials have not shown meaningful health benefits, and product quality varies. Senolytics (D+Q, fisetin): Phase 2 human biological activity data, Phase 3 outcome trials pending. Consider only after foundation is established and ideally within a clinical trial context if available.5
The Annual Rhythm
Regular checkups with bloodwork your doctor recommends (see our lab testing guide), including blood pressure, cholesterol and blood sugar; the 2025 AHA/ACC blood pressure guideline replaced the 2017 version, and most adults are treated to below 130/80.9 Bone density screening per USPSTF guidance. Optional fitness and grip strength checks to track progress. Annual review of all medications and supplements against current evidence. Semi-annual dental care (gum disease is linked to cardiovascular risk). Regular cancer screening per USPSTF guidelines appropriate for age and risk factors.
Put this research into practice: Build Your Longevity Protocol · Protocol Comparison Tool · Cost Calculator
References
- 1Attia P, Gifford B. Outlive: The Science and Art of Longevity. Harmony Books; 2023.
- 2Walker MP. "Why We Sleep: Unlocking the Power of Sleep and Dreams." Scribner. 2017.
- 3Mandsager 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
- 4Bhatt DL, et al. "Cardiovascular Risk Reduction with Icosapent Ethyl for Hypertriglyceridemia." N Engl J Med. 2019;380(1):11-22. PubMed · DOI
- 5López-Otín C, et al. "Hallmarks of aging: An expanding universe." Cell. 2023;186(2):243-278. PubMed · DOI
- 6Piercy KL, et al. "The Physical Activity Guidelines for Americans." JAMA. 2018;320(19):2020-2028. PubMed · DOI
- 7Manson 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
- 8Demay MB, et al. "Vitamin D for the Prevention of Disease: An Endocrine Society Clinical Practice Guideline." J Clin Endocrinol Metab. 2024;109(8):1907-1947. PubMed · DOI
- 9Jones DW, et al. "2025 AHA/ACC/AANP/AAPA/ABC/ACCP/ACPM/AGS/AMA/ASPC/NMA/PCNA/SGIM Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines." J Am Coll Cardiol. 2025;86(18):1567-1678. PubMed · DOI
