How Anyone Can Use AI to Live Longer, Healthier, and Smarter
By Rajeev Kapur & Darshan Shah, MD · Foreword by Dr. Mark Hyman · Endorsed by Ray Kurzweil
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Buy the book and get 6 months of HealthNexus free — your AI-powered digital twin.

AI is the new operating system for healthcare, shifting medicine from reactive treatment to continuous, predictive optimization. This is a book everyone should read as we enter the age of intelligent health.
For too long, medicine has operated as a sick-care system. We wait for symptoms, label disease, and intervene after the fact. What AI makes possible is a continuous understanding of the body, where we can identify imbalances early and intervene upstream.
An accessible, optimistic guide to the AI revolution transforming medicine — shifting healthcare from reactive sick-care to continuous, predictive, deeply personalized wellness.
Part I
From pen-and-pad to AI diagnostics.
Part II
AI tools for dashboards, nutrition, fitness and prevention.
Part III
Drug discovery, genomics and the future of trials.
Part IV
Bias, equity and becoming an AI-literate patient.
Included with the book
Your personal health intelligence platform. HealthNexus brings your wearable metrics, lab reports and doctor notes into one place — then runs them through multiple leading AI models (Claude, ChatGPT, Gemini and xAI), compares their answers, and surfaces the best personalized insights for you.

A living 3D model of your body across 16 health systems — from metabolic and heart health to longevity.
Track how young your body really is, and watch your scores improve over time.
Clear, ranked next steps built from your own labs, wearables and records.
Wearables, bloodwork, genomics and medical records — finally connected.
Several top AI models check each other so you get the strongest answer.
Scan your body to estimate muscle mass, body fat and composition.
$99 / year
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