Age Later

Dr. Nir Barzilai isn't writing from the sidelines — he's the scientist who discovered the first longevity gene in humans and spent decades studying 750 SuperAgers who reached their 90s without cancer, diabetes, heart disease, or cognitive decline. That research is the backbone of this book, and it makes the longevity science feel grounded rather than speculative. He covers genetic factors, lifestyle influences, and pharmacological possibilities including metformin in prose accessible enough for general readers without losing scientific substance. The American Federation for Aging Research backed the publication, which signals peer credibility. The honest caveat: some pharmacological takeaways — especially around metformin — should not be acted on without a doctor's guidance, and fast-moving longevity research means some findings may have shifted since the 2020 publication. For anyone seriously interested in healthy aging, this is a credible and engaging starting point.