Bad Blood by John Carreyrou cover

Bad Blood

Secrets and Lies in a Silicon Valley Startup

by John Carreyrou

4.7(32,847 ratings)
10 min read

Brief overview

This book charts the meteoric rise and fall of a Silicon Valley startup that vowed to revolutionize blood testing but got entangled in secrecy and flawed science. It unravels how grand promises, high-profile partnerships, and a cult of personality drove the company forward, only for its hidden flaws to trigger one of the industry’s biggest scandals. Expect to learn how ambition can lead to overreach, and why critical thinking and ethics matter in the face of dazzling innovation.

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Introduction

Sometimes, a seemingly groundbreaking idea can captivate an entire industry and promise to rewrite the rules. This startup claimed it could run hundreds of blood tests from a single finger prick, a vision that fired up investors, media, and the public. Early believers saw it as Silicon Valley’s next big success story.

But behind the curtain of optimism lay a flawed product, growing secrecy, and a culture that prized a captivating narrative over scientific transparency. That gap between vision and reality set the stage for a dramatic unraveling.

Throughout these pages, you’ll discover how leadership, ambition, and intense pressure intermixed, resulting in an ultimate collapse. Let’s begin with the spark that ignited it all—the idea of making blood testing simple, fast, and accessible to everyone.

Bold Beginnings

A driven young founder insisted on changing the world with a fingertip of blood. Inspired by tech luminaries, they pitched a device capable of diagnosing a vast array of conditions at a fraction of the cost and effort. Investors were mesmerized by the vision and the possibility of massive returns.

The startup’s well-connected backers gave it a aura of legitimacy, despite underlying technical hurdles. The founder’s unwavering confidence and persuasive demeanor fueled early enthusiasm. Here, optimism seemed limitless, as if unstoppable innovation was guaranteed by sheer will.

People love a story of a revolutionary breakthrough. When money and credibility flow so freely at the idea stage, it’s easy to overlook actual feasibility. And that’s exactly what happened—bold promises overshadowed the delicate science behind the product.

Early excitement can snowball into unconditional trust, even before real validation takes place.

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What is Bad Blood about?

“Bad Blood: Secrets and Lies in a Silicon Valley Startup” uncovers the gripping true story behind one of the tech world’s biggest scandals. Through John Carreyrou’s thorough reporting, readers witness how promises of groundbreaking blood tests captivated investors, the public, and healthcare leaders. The disconnect between the company’s glowing image and its hidden technical failures highlights the dangers of unchecked ambition within a rapidly evolving industry.

Positioned in the heart of startup culture, the book demonstrates how powerful narratives can mask serious ethical oversights. As the Theranos myth unravels, the importance of transparency and rigorous validation becomes clear. This compelling account invites readers to reflect on what happens when hype and real science collide, leaving a lasting impact on how we evaluate innovation.

Review of Bad Blood

Carreyrou’s investigative style is a major strength here, offering an unfiltered look at boardroom debates, corporate secrecy, and individual voices that dared to speak up. You get a balanced perspective: on one hand, a laudable vision for simpler healthcare; on the other, the unsettling reality of flawed data and suppressed concerns. This blend of storytelling and factual reporting delivers a far-reaching lesson in the perils of chasing game-changing ideas without solid grounding.

Readers will take away practical insights on why leaders should scrutinize big promises with caution and why robust regulatory checks exist. Carreyrou explains complex topics in plain language, making the book accessible to those with little medical or scientific background. Whether you’re curious about corporate ethics or want to see what happens when marketing outshines actual innovation, there’s much to learn.

Ultimately, “Bad Blood” shows how even the boldest startup aspirations can crumble under the weight of truth. It’s a riveting read for anyone searching for a real-world reminder that ethics and evidence should guide progress, especially when lives are at stake.

Who should read Bad Blood?

  • Healthcare innovators seeking lessons on balancing promising technology with patient safety.
  • Aspiring entrepreneurs who want to understand the fallout from unchecked ambition.
  • Business leaders looking to strengthen corporate governance and ethical oversight.
  • Readers intrigued by investigative journalism that reveals hidden truths in tech-driven ventures.

About the author

John Carreyrou is a Pulitzer Prize-winning investigative reporter and author of "Bad Blood: Secrets and Lies in a Silicon Valley Startup." He is a French-American journalist with over 20 years of experience, having worked for The Wall Street Journal from 1999 to 2019. Carreyrou holds a B.A. in political science and government from Duke University and has won numerous awards for his investigative reporting, including two Pulitzer Prizes, the George Polk Award for Financial Reporting, and the Gerald Loeb Award for Distinguished Business and Financial Journalism. He is known for his meticulous and detailed reporting, particularly in exposing the fraudulent practices of Theranos, a multibillion-dollar blood-testing company.

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