Your Guided Reading Path

New to Longevity Science?
Start Here.

IQ Healthspan has 120+ deeply researched articles, free interactive tools, 5 guided courses, and hundreds of peer-reviewed citations. This page gives you a structured reading path — from foundational concepts through advanced protocols — in the order that builds understanding most effectively.

The Foundation: What Aging Actually Is

Before diving into interventions, understand the biology. These articles explain the 12 processes that drive aging and the most important metrics that predict lifespan. Read these first — everything else builds on them.

1 The Hallmarks of Aging: The 12 Biological Processes Driving Your Decline Essential → 2 VO2 Max and Longevity: What Fitness Predicts and How to Improve It Essential → 3 Epigenetic Clocks: How Scientists Measure Biological Age Deep Dive → 4 Centenarian Biology: What People Who Live to 100 Actually Have in Common Deep Dive →

The Big Four: Exercise, Sleep, Nutrition, Connection

These four have the strongest human evidence of anything you can change, and no supplement or drug makes up for neglecting them. Master these before moving on.

5 Zone 2 Training: The Complete Science and Protocol Essential → 6 Strength Training for Longevity Essential → 7 Sleep and Longevity: The Foundation Everything Else Is Built On Essential → 8 The Longevity Nutrition Blueprint: What to Eat, What to Avoid Essential → 9 Protein and Longevity: How Much You Actually Need Deep Dive → 10 Social Connection and Longevity: The Biology of Belonging Essential →

Measure It: Biomarkers and Testing

You can't optimize what you don't measure. These articles explain which tests actually matter, what the numbers mean, and how results are read against clinical guidelines.

11 The Complete Longevity Lab Testing Guide Essential → 12 ApoB: The Cholesterol Number Your Doctor Isn't Ordering Essential → 13 Fasting Insulin and HOMA-IR: Catching Metabolic Disease Early Essential → 14 Coronary Artery Calcium Scoring: What Your Score Means Deep Dive → ★ What Should I Test Next? (Interactive Tool) Tool → ★ Biomarker Reference Tool (Interactive) Tool →

Optimize: Supplements, Fasting, and Pharmacology

Once the foundation is solid, these are the evidence-based additions that the science supports. Start with the supplements guide, then explore specific compounds and fasting strategies.

15 The Longevity Supplements Guide: What the Evidence Supports Essential → 16 Omega-3 Fatty Acids and Longevity Deep Dive → 17 Vitamin D and Longevity: Genuine Benefit vs Wishful Thinking Deep Dive → 18 Creatine: The Best-Supported Supplement for Muscle Strength Deep Dive → 19 Time-Restricted Eating: A Complete Evidence Review Deep Dive → 20 GLP-1 Agonists: Semaglutide, Tirzepatide, Retatrutide Essential → 21 Rapamycin and mTOR: Lifespan in Yeast, Worms, Flies and Mice Deep Dive → ★ Supplement Evidence Database (Interactive) Tool →

Build Your Protocol: Putting It All Together

Now you have the knowledge. These articles and tools help you assemble a personalized, evidence-based longevity protocol for your age, budget, and goals.