# LongevityReviews

> Independent, peer-reviewed human clinical evidence consensus database for longevity modalities, lifestyle interventions, and protocol stacks. 0% sponsored rankings, 0% affiliate bias.

## Core Evaluation Framework
- **Composite Longevity Score (0-100)**: Calibrated aggregate of human clinical trial effect size, statistical power, biological mechanism plausibility, and safety margin.
- **Evidence Grading**:
  - **Grade A**: Multiple randomized controlled human trials (RCTs) or robust meta-analyses showing statistically significant longevity/biomarker improvements.
  - **Grade B**: Single high-quality human RCT or prospective epidemiological cohort with strong biological causality.
  - **Grade C**: Preclinical animal longevity models (e.g. ITP mice) with emerging human biomarker/safety data.
  - **Grade D**: Theoretical or mechanistic in vitro data; unproven in human longevity trials.

## The 8 Canonical Longevity Vectors
- **Heart Health & Endothelial Function** (`heart_health`): Cardiovascular output, endothelial elasticity, VO2 max & arterial compliance. Key Biomarkers: VO2 Max, ApoB, Lp(a), CAC Score, Endothelial FMD, Resting Heart Rate
- **Brain Longevity & Neuroprotection** (`brain_longevity`): Hippocampal plasticity, neurogenesis, synaptic density & glymphatic clearance. Key Biomarkers: BDNF, Deep NREM Sleep, Glymphatic Flow, Processing Speed, Serum Neurofilament Light (NfL)
- **Metabolic Flexibility & Glycemic Control** (`metabolic_health`): Insulin sensitivity, substrate switching, mitochondrial uncoupling & visceral fat reduction. Key Biomarkers: HOMA-IR, Fasting Insulin, HbA1c, Postprandial Glycemic Area, Triglyceride/HDL Ratio
- **Cancer Defense & DNA Repair** (`cancer_defense`): Immunosurveillance, genomic stability, PARP activation & senescent cell purge. Key Biomarkers: NK Cell Cytotoxicity, Circulating Tumor DNA (ctDNA), 8-OHdG, gamma-H2AX Foci, MCED Grail Test
- **Endocrine & Anabolic Balance** (`testosterone`): Leydig cell output, free androgen index, LH/FSH axis & lean mass signaling. Key Biomarkers: Free Testosterone, Total Testosterone, SHBG, DHEA-S, IGF-1 / IGFBP-3 Ratio
- **Chronic Inflammation Reduction** (`chronic_inflammation`): Suppression of sterile low-grade inflamma-aging and SASP secretome. Key Biomarkers: hs-CRP, IL-6, TNF-alpha, Fibrinogen, Neutrophil-to-Lymphocyte Ratio (NLR)
- **Bone Density & Connective Matrix** (`bone_density`): Osteoblast mechanotransduction, trabecular architecture & collagen synthesis. Key Biomarkers: DEXA Lumbar & Femoral T-Score, Serum P1NP, CTX Bone Resorption, Tendon Stiffness
- **Cellular Longevity & Autophagy** (`cellular_longevity`): Mitophagy velocity, sirtuin/AMPK activation, stem cell renewal & telomere maintenance. Key Biomarkers: DunedinPACE Epigenetic Clock, GrimAge v2 Acceleration, Intracellular NAD+ Pool, LC3-II Autophagy Flux

## Top Evaluated Modalities by Canonical Vector

### Heart Health & Endothelial Function
- [VO2 Max High-Intensity Interval Training (4x4)](https://longevityreviews.org/modalities/vo2_max_hiit_training/raw.md): #1 in Heart | Score: 98/100 | Tier: gold | Cost: free | [Web Review](https://longevityreviews.org/modalities/vo2_max_hiit_training)
- [VO2 Max High-Intensity Interval Training (4x4)](https://longevityreviews.org/modalities/vo2_max_4x4_hiit/raw.md): #2 in Heart | Score: 98/100 | Tier: gold | Cost: free | [Web Review](https://longevityreviews.org/modalities/vo2_max_4x4_hiit)
- [VO2 Max High-Intensity Interval Training (4x4)](https://longevityreviews.org/modalities/rhonda_hiit_sprints/raw.md): #3 in Heart | Score: 98/100 | Tier: gold | Cost: free | [Web Review](https://longevityreviews.org/modalities/rhonda_hiit_sprints)
- [Zone 2 Aerobic Conditioning](https://longevityreviews.org/modalities/zone-2-cardio/raw.md): #4 in Heart | Score: 97/100 | Tier: gold | Cost: free | [Web Review](https://longevityreviews.org/modalities/zone-2-cardio)
- [High-Resistance IMST (30 Breaths at 75% P_Imax)](https://longevityreviews.org/modalities/high-resistance-imst-30-breaths/raw.md): #5 in Heart | Score: 88/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/high-resistance-imst-30-breaths)

### Brain Longevity & Neuroprotection
- [Lithium Orotate (Micro-Dose)](https://longevityreviews.org/modalities/lithium-orotate/raw.md): #1 in Brain | Score: 93/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/lithium-orotate)
- [Lateral Decubitus Sleep Posture (Side-Sleeping)](https://longevityreviews.org/modalities/lateral-decubitus-sleep-posture/raw.md): #2 in Brain | Score: 81/100 | Tier: bronze | Cost: free | [Web Review](https://longevityreviews.org/modalities/lateral-decubitus-sleep-posture)
- [Lion's Mane (Hericium erinaceus)](https://longevityreviews.org/modalities/lions_mane/raw.md): #3 in Brain | Score: 91/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/lions_mane)
- [Magnesium L-Threonate (Magtein)](https://longevityreviews.org/modalities/magnesium_threonate/raw.md): #4 in Brain | Score: 93/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/magnesium_threonate)
- [Methylene Blue (USP)](https://longevityreviews.org/modalities/methylene-blue/raw.md): #5 in Brain | Score: 92/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/methylene-blue)

### Metabolic Flexibility & Glycemic Control
- [Myo-Inositol](https://longevityreviews.org/modalities/myo-inositol/raw.md): #1 in Metabolic | Score: 93/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/myo-inositol)
- [48-Hour Extended Fasting](https://longevityreviews.org/modalities/extended-fast-48h/raw.md): #2 in Metabolic | Score: 83/100 | Tier: bronze | Cost: free | [Web Review](https://longevityreviews.org/modalities/extended-fast-48h)
- [5-Day Fasting Mimicking Diet (FMD)](https://longevityreviews.org/modalities/longo_5day_fasting_mimicking_diet/raw.md): #3 in Metabolic | Score: 96/100 | Tier: gold | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/longo_5day_fasting_mimicking_diet)
- [Peter Attia's Centenarian Strength & Stability](https://longevityreviews.org/modalities/attia_centenarian_strength/raw.md): #4 in Metabolic | Score: 90/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/attia_centenarian_strength)
- [72-Hour Prolonged Autophagy Fast](https://longevityreviews.org/modalities/prolonged-autophagy-fast-72h/raw.md): #5 in Metabolic | Score: 89/100 | Tier: silver | Cost: free | [Web Review](https://longevityreviews.org/modalities/prolonged-autophagy-fast-72h)

### Cancer Defense & DNA Repair
- [48-Hour Extended Fasting](https://longevityreviews.org/modalities/extended-fast-48h/raw.md): #1 in Cancer Defense | Score: 83/100 | Tier: bronze | Cost: free | [Web Review](https://longevityreviews.org/modalities/extended-fast-48h)
- [Sulforaphane (Broccoli Sprout Extract)](https://longevityreviews.org/modalities/sulforaphane/raw.md): #2 in Cancer Defense | Score: 93/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/sulforaphane)
- [Rapamycin (Sirolimus)](https://longevityreviews.org/modalities/rapamycin/raw.md): #3 in Cancer Defense | Score: 93/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/rapamycin)
- [Trans-Resveratrol (Micronized)](https://longevityreviews.org/modalities/resveratrol_pterostilbene/raw.md): #4 in Cancer Defense | Score: 90/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/resveratrol_pterostilbene)
- [Trans-Resveratrol (Micronized)](https://longevityreviews.org/modalities/resveratrol-micronized/raw.md): #5 in Cancer Defense | Score: 90/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/resveratrol-micronized)

### Endocrine & Anabolic Balance
- [Enclomiphene Citrate (Selective Estrogen Receptor Modulator)](https://longevityreviews.org/modalities/enclomiphene-citrate/raw.md): #1 in Endocrine | Score: 88/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/enclomiphene-citrate)
- [Tongkat Ali (Eurycoma Longifolia / Eurycomanone)](https://longevityreviews.org/modalities/tongkat-ali-eurycoma/raw.md): #2 in Endocrine | Score: 86/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/tongkat-ali-eurycoma)
- [Tongkat Ali (Eurycoma Longifolia / Eurycomanone)](https://longevityreviews.org/modalities/tongkat-ali/raw.md): #3 in Endocrine | Score: 86/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/tongkat-ali)
- [Peter Attia's Centenarian Strength & Stability](https://longevityreviews.org/modalities/attia_centenarian_strength/raw.md): #4 in Endocrine | Score: 90/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/attia_centenarian_strength)
- [Ashwagandha KSM-66 (Standardized Withanolides)](https://longevityreviews.org/modalities/ashwagandha_ksm_66/raw.md): #5 in Endocrine | Score: 89/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/ashwagandha_ksm_66)

### Chronic Inflammation Reduction
- [N-Acetyl Cysteine (NAC / GlyNAC)](https://longevityreviews.org/modalities/n_acetyl_cysteine_nac/raw.md): #1 in Inflammation | Score: 95/100 | Tier: gold | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/n_acetyl_cysteine_nac)
- [Wim Hof Cyclic Retention Breathing Method](https://longevityreviews.org/modalities/wim-hof-breathing-method/raw.md): #2 in Inflammation | Score: 90/100 | Tier: silver | Cost: free | [Web Review](https://longevityreviews.org/modalities/wim-hof-breathing-method)
- [Wim Hof Cyclic Retention Breathing Method](https://longevityreviews.org/modalities/wim_hof_cyclic_retention_breathwork/raw.md): #3 in Inflammation | Score: 87/100 | Tier: silver | Cost: free | [Web Review](https://longevityreviews.org/modalities/wim_hof_cyclic_retention_breathwork)
- [Fermented Foods Protocol (6 Servings/Day)](https://longevityreviews.org/modalities/high-diversity-fermented-foods-6x/raw.md): #4 in Inflammation | Score: 82/100 | Tier: bronze | Cost: free | [Web Review](https://longevityreviews.org/modalities/high-diversity-fermented-foods-6x)
- [Trans-Resveratrol (Micronized)](https://longevityreviews.org/modalities/resveratrol_pterostilbene/raw.md): #5 in Inflammation | Score: 90/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/resveratrol_pterostilbene)

### Bone Density & Connective Matrix
- [LIFTMOR Heavy Compound Loading (5x5 at >80% 1RM)](https://longevityreviews.org/modalities/liftmor-heavy-axial-loading/raw.md): #1 in Bone Matrix | Score: 78/100 | Tier: bronze | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/liftmor-heavy-axial-loading)
- [Resistance Training & Heavy Structural Loading](https://longevityreviews.org/modalities/resistance-training/raw.md): #2 in Bone Matrix | Score: 97/100 | Tier: gold | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/resistance-training)
- [Peter Attia's Centenarian Strength & Stability](https://longevityreviews.org/modalities/attia_centenarian_strength/raw.md): #3 in Bone Matrix | Score: 90/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/attia_centenarian_strength)
- [MCHA Whole-Bone Calcium + Boron (6mg)](https://longevityreviews.org/modalities/microcrystalline-hydroxyapatite-boron/raw.md): #4 in Bone Matrix | Score: 86/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/microcrystalline-hydroxyapatite-boron)
- [Vitamin D3 (Cholecalciferol)](https://longevityreviews.org/modalities/vitamin-d3/raw.md): #5 in Bone Matrix | Score: 86/100 | Tier: silver | Cost: inexpensive | [Web Review](https://longevityreviews.org/modalities/vitamin-d3)

### Cellular Longevity & Autophagy
- [Rapamycin (Sirolimus)](https://longevityreviews.org/modalities/rapamycin/raw.md): #1 in Cellular | Score: 93/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/rapamycin)
- [5-Day Fasting Mimicking Diet (FMD)](https://longevityreviews.org/modalities/longo_5day_fasting_mimicking_diet/raw.md): #2 in Cellular | Score: 96/100 | Tier: gold | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/longo_5day_fasting_mimicking_diet)
- [Hyperbaric Oxygen Therapy (HBOT 2.0 ATA)](https://longevityreviews.org/modalities/hyperbaric-oxygen-therapy/raw.md): #3 in Cellular | Score: 92/100 | Tier: silver | Cost: clinical | [Web Review](https://longevityreviews.org/modalities/hyperbaric-oxygen-therapy)
- [72-Hour Prolonged Autophagy Fast](https://longevityreviews.org/modalities/prolonged-autophagy-fast-72h/raw.md): #4 in Cellular | Score: 89/100 | Tier: silver | Cost: free | [Web Review](https://longevityreviews.org/modalities/prolonged-autophagy-fast-72h)
- [Nicotinamide Riboside (NR / Tru Niagen)](https://longevityreviews.org/modalities/nicotinamide-riboside-nr/raw.md): #5 in Cellular | Score: 92/100 | Tier: silver | Cost: moderate | [Web Review](https://longevityreviews.org/modalities/nicotinamide-riboside-nr)

## Reviewed Longevity Protocol Stacks
- [Peter Attia Centenarian Decathlon Protocol](https://longevityreviews.org/protocols/peter_attia_centenarian_decathlon_protocol/raw.md): Stack Score: 97.5/100 | ~$95/mo | ~65m/day | [Full Audit](https://longevityreviews.org/protocols/peter_attia_centenarian_decathlon_protocol)
  > The premier evidence-based physical longevity framework. Systematically optimizes the two greatest clinical predictors of human healthspan: top-decile cardiorespiratory VO2 Max and structural musculoskeletal power, supported by rigorous ApoB eradication and DEXA surveillance.
- [Dr Matthew Walker Sleep Blueprint](https://longevityreviews.org/protocols/dr_matthew_walker_sleep_blueprint/raw.md): Stack Score: 97.4/100 | ~$25/mo | ~15m/day | [Full Audit](https://longevityreviews.org/protocols/dr_matthew_walker_sleep_blueprint)
  > Flawless behavioral sleep optimization stack with virtually zero financial cost. Restores slow-wave deep sleep and glymphatic brain waste clearance.
- [Master Cellular Redox & Endogenous Glutathione Protocol](https://longevityreviews.org/protocols/cellular_redox_glutathione_protocol/raw.md): Stack Score: 97.2/100 | ~$72/mo | ~5m/day | [Full Audit](https://longevityreviews.org/protocols/cellular_redox_glutathione_protocol)
  > The premier clinical cellular redox protocol combining the full GlyNAC stoichiometric engine, sulforaphane Nrf2 phase II induction, and alpha-lipoic acid catalytic recycling to eliminate systemic inflammaging and restore youthful intracellular glutathione.
- [Dr Thomas Dayspring Endothelial Vascular Protocol](https://longevityreviews.org/protocols/dr_thomas_dayspring_endothelial_vascular_protocol/raw.md): Stack Score: 97.1/100 | ~$95/mo | ~5m/day | [Full Audit](https://longevityreviews.org/protocols/dr_thomas_dayspring_endothelial_vascular_protocol)
  > The definitive clinical lipidology stack designed by world-renowned lipidologist Dr. Thomas Dayspring. Directly targets atherogenic particle retention with rigorous ApoB surveillance (target <60 mg/dL, <40 mg/dL for documented CAD), non-contrast CAC arterial calcification staging, low-attenuation plaque suppression via Aged Garlic Extract, AMPK/HMG-CoA modulation via Citrus Bergamot, and mandatory mitochondrial protection with Ubiquinol.
- [Peter Attia Elite Cardiorespiratory Engine (Zone 2 + 4x4 VO2 Max)](https://longevityreviews.org/protocols/dr_peter_attia_zone2_vo2max_cardiorespiratory_protocol/raw.md): Stack Score: 97/100 | ~$75/mo | ~60m/day | [Full Audit](https://longevityreviews.org/protocols/dr_peter_attia_zone2_vo2max_cardiorespiratory_protocol)
  > A rigorous aerobic framework dedicated to maximizing cardiorespiratory fitness—the single greatest clinical predictor of all-cause mortality. Combines 80% low-intensity Zone 2 base training with 20% Norwegian 4x4 VO2 Max intervals.
- [Dr. David Perlmutter Neuro-Longevity & Synaptic Protection Stack](https://longevityreviews.org/protocols/dr_david_perlmutter_neuro_protection_stack/raw.md): Stack Score: 96.8/100 | ~$65/mo | ~5m/day | [Full Audit](https://longevityreviews.org/protocols/dr_david_perlmutter_neuro_protection_stack)
  > A clinically validated neuro-longevity protocol designed by Dr. David Perlmutter that halts tau hyperphosphorylation, clears neuro-inflammatory glial ROS, blocks NMDA excitotoxicity, and promotes BDNF/NGF synaptic neurogenesis.
- [Mitochondrial Electron Transport & Photobiomodulation Protocol](https://longevityreviews.org/protocols/mitochondrial_electron_transport_optimizer/raw.md): Stack Score: 96.5/100 | ~$110/mo | ~20m/day | [Full Audit](https://longevityreviews.org/protocols/mitochondrial_electron_transport_optimizer)
  > An advanced mitochondrial bioenergetics stack coupling chemical electron donors (Methylene Blue, CoQ10/Ubiquinol, NAD+ precursor NR) with 660nm/850nm photobiomodulation to maximize oxygen consumption, ATP output, and brain connectivity.
- [Dr. Rhonda Patrick Micronutrient Longevity Matrix](https://longevityreviews.org/protocols/dr_rhonda_patrick_micronutrient_defense_protocol/raw.md): Stack Score: 96.5/100 | ~$135/mo | ~40m/day | [Full Audit](https://longevityreviews.org/protocols/dr_rhonda_patrick_micronutrient_defense_protocol)
  > An evidence-grounded nutritional biochemical stack targeting endogenous cytoprotection, DNA repair, phospholipid omega-3 transport across the blood-brain barrier, and heat shock protein elevation.
- [NIA Interventions Testing Program (ITP) Lifespan Synergy Stack](https://longevityreviews.org/protocols/dr_richard_miller_itp_pharmacotherapy_protocol/raw.md): Stack Score: 96.5/100 | ~$160/mo | ~20m/day | [Full Audit](https://longevityreviews.org/protocols/dr_richard_miller_itp_pharmacotherapy_protocol)
  > Synthesized directly from the National Institute on Aging (NIA) Interventions Testing Program—the gold standard in reproducible mammalian lifespan extension studies across multiple genetically heterogeneous mouse cohorts.
- [Prof. Belinda Beck LIFTMOR Osteogenic Loading & Trabecular Architecture Protocol](https://longevityreviews.org/protocols/belinda_beck_liftmor_bone_density_protocol/raw.md): Stack Score: 96.5/100 | ~$75/mo | ~40m/day | [Full Audit](https://longevityreviews.org/protocols/belinda_beck_liftmor_bone_density_protocol)
  > Landmark JBMR RCT-validated protocol by Prof. Belinda Beck (The Bone Clinic / Griffith Univ). Employs high-intensity heavy progressive axial loading (5x5 deadlifts/squats/presses at 80-85% 1RM) and high strain-rate vertical hops to trigger active osteoblastogenesis (+2.9% spine, +1.5% femoral neck BMD accretion in osteopenic adults), supported by microcrystalline hydroxyapatite with boron and low-intensity vibration.

## AI Agent Tools & API Endpoints
- **Deep Full-Text Context**: [https://longevityreviews.org/llms-full.txt](https://longevityreviews.org/llms-full.txt) (All 269 modalities with PMIDs, mechanisms, dosages, and safety contraindications)
- **Modality Raw Markdown API**: `https://longevityreviews.org/modalities/[id_or_slug]/raw.md`
- **Protocol Raw Markdown API**: `https://longevityreviews.org/protocols/[protocol_id]/raw.md`
- **Agent Search API**: `GET https://longevityreviews.org/api/v1/search?q={query}&vector={vector}`
- **Modality Evidence JSON**: `GET https://longevityreviews.org/api/v1/modalities/{id_or_slug}`
- **Stack Conflict & Synergy Auditor**: `POST https://longevityreviews.org/api/v1/audit-stack` with JSON body `{ "modality_ids": ["..."] }`
- **Model Context Protocol (MCP)**: `https://longevityreviews.org/api/mcp` (JSON-RPC 2.0 compatible endpoint for Claude Desktop, Cursor, and AGY agents)