Hundred Health Launches to End Reactive Care With 100-Day Action Plans

SACRAMENTO, CA – December 16, 2025 – A new health technology company, Hundred Health, officially launched its integrated platform today, aiming to shift the paradigm of personal health from reactive treatment to proactive optimization. The company offers a system that unifies a user's entire health history with advanced lab testing and wearable data, translating the complex information into a personalized, 100-day action plan delivered through a mobile app.

The venture is the brainchild of serial entrepreneur Tyler Smith, whose previous successes include the real estate software firm SkySlope. Smith’s motivation for Hundred Health is deeply personal, stemming from a stark wake-up call about his own health.

"I founded Hundred after discovering that my body was aging faster than expected," said Tyler Smith, Founder and CEO of Hundred. "That wake-up call sent me down a path of advanced testing, elite medical guidance, and deep research to better understand how insights, behavior, and health span actually connect... There's a huge difference between knowing your numbers and knowing how to act on them. That's the whitespace I saw."

This gap between data and action is the central problem Hundred Health intends to solve. By providing clear, evidence-based guidance, the company hopes to empower individuals to make incremental changes that compound over time, improving their long-term health and longevity.

From Data Overload to Actionable Insight

In an age where individuals can track everything from their heart rate variability to their glucose levels, many are left drowning in data without a clear map for improvement. Hundred Health's core proposition is to serve as that map. The platform’s technical architecture is built on a foundation of comprehensive integration, a significant challenge in the fragmented landscape of American healthcare.

The system is designed to connect with over 300 different electronic medical record (EMR) systems, allowing it to pull a user's complete health history, including past diagnoses, prescriptions, and lab results. This historical context is then combined with real-time data from popular wearable devices like Oura, WHOOP, and Apple Fitness, as well as an extensive lifestyle assessment.

This consolidated data provides the baseline for the company’s diagnostic process, which includes over 160 biomarkers measured across two lab visits per year. By unifying these disparate data streams—past medical history, current lifestyle, and deep biological markers—the platform creates a holistic health profile that is far more detailed than what is typically available in a standard annual physical. The goal is to move beyond isolated numbers and create a dynamic, interconnected picture of an individual's health, enabling the platform to deliver truly personalized recommendations instead of generic advice.

The Science Behind the 100-Day Protocol

To ensure its recommendations are both safe and effective, Hundred Health emphasizes its commitment to clinical rigor. The company states that all insights are grounded in recent scientific research and reviewed by a team of clinicians. This claim is significantly bolstered by the recent acquisition of BellSant, a health and longevity platform with a deep scientific foundation.

The acquisition provides Hundred Health with what it describes as one of the world's most comprehensive libraries of proprietary longevity studies, developed by over 25 researchers from leading institutions such as Johns Hopkins, Harvard, and Stanford. This scientific library, covering aging, genomics, metabolic biology, and more, now fuels the AI engine that helps generate the personalized protocols.

Furthermore, the company's advisory board includes a multidisciplinary team of experts, including epidemiologists, cardiologists, and specialists in metabolic health and performance psychology. This diverse expertise informs the creation of the platform's signature 100-day action plans. Each plan provides clear, actionable guidance across nutrition, exercise, recovery, and supplementation. The 100-day cycle was deliberately chosen to be long enough to drive meaningful physiological change but short enough to remain motivating and achievable for the user. After each cycle, progress is measured, and the plan is dynamically adjusted for the next 100 days.

"Most people simply want to feel good and maintain a level of wellbeing that allows them to live the life they want, with the people they love, for as long as possible," said Sonny Mayugba, Chief Commercial Officer at Hundred. "We're putting an unprecedented level of clinical depth directly in your pocket — in a way that's clear, personal, and accessible for each individual."

Democratizing Elite Health or a New Niche Market?

A central pillar of Hundred Health's mission is to democratize access to a level of proactive, data-driven healthcare once reserved for the ultra-wealthy. With an annual price of $499, the company is positioning itself as an accessible alternative to high-cost executive health programs and concierge medicine, which can easily cost between $2,000 and $10,000 per year.

The $499 subscription includes the comprehensive lab testing (160+ biomarkers twice a year), data integration, and the personalized 100-day protocols. Lab tests can be performed at one of 5,000 partner facilities nationwide, though an in-home phlebotomy service is available for an additional fee. Members also receive discounts of up to 20% on third-party tested supplements from vetted brands like Thorne and Momentous, which are often recommended as part of the action plan.

While the price point is significantly lower than its high-end counterparts, it still represents a considerable investment for many consumers, raising questions about whether it truly achieves mass-market accessibility or carves out a new niche for the health-conscious upper-middle class. However, compared to the thousands of dollars required for similar, less-integrated services, Hundred Health's offering represents a substantial step toward broadening the availability of advanced, preventative health optimization.

Backed by Capital and Experience

Hundred Health enters the market not as a speculative startup but as a well-funded company with experienced leadership. The company recently announced it has raised $16 million in a Series A funding round co-led by Lobby VC and LifeX Ventures, with participation from Y Combinator, Gradient, and other notable investors. This financial backing provides the runway needed to scale its ambitious platform.

Founder Tyler Smith brings more than a decade of relevant experience in healthcare IT. Prior to Hundred, he co-founded and served as CEO of Health Data Movers, a firm specializing in healthcare software development and data integration for major health systems. This background in the technical complexities of health data interoperability provides a credible foundation for the company's promise to unify fragmented medical records.

With a powerful combination of personal mission, deep technical expertise, significant financial backing, and a robust scientific framework inherited from BellSant, Hundred Health is poised to make a significant impact. By aiming to solve the problem of data overload with clear, actionable, and cyclical plans, the company is making a bold attempt to redefine the relationship individuals have with their own health, moving it from a state of passive reaction to one of proactive, lifelong management.