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Former research bio-chemist. Author of the New York Times Best Seller, The Paleo Solution. BJJ Blue Belt.

Official account for news and updates from Medium.

Cardiologist, researcher, Editor-in-Chief, Medscape, author of The Patient Will See You Now

Builder. Meditator. Husband of @summertomato, father to Zelda & Toaster.

Stephen J. Dubner is co-author of the Freakonomics books and host of Freakonomics Radio.

Wrote The Four Tendencies, Better Than Before, The Happiness Project & Happier at Home (can't resist adding: New York Times bestsellers). Etc.

Coauthor Hacking Growth. Coined the term “growth hacking” after using it to ignite breakout growth for Dropbox, LogMeIn, Eventbrite & lookout. www.SeanEllis.me