Complement 1

Complement 1 is a US-based company focused on enhancing cancer-related health outcomes through personalized lifestyle modifications, offering tailored coaching in physical activity, nutrition, and mind-body practices. Complement 1, founded in 2024 and headquartered in Dover, US, is dedicated to improving health outcomes for cancer patients through personalized coaching. The company raised USD 16. 00 mn in Seed funding on May 13, 2025, led by investors Owl Ventures and Blume Ventures, marking its initial investment round.

Complement 1 offers a robust platform designed to enhance cancer-related health outcomes through personalized lifestyle modifications. Core services include tailored coaching in physical activity, nutrition, and mind-body practices, delivered one-on-one by certified CoActive Coaches. Sessions commence within 24 hours of client engagement, aiming to address challenges faced by cancer patients with a customized care plan that evolves daily based on individual health conditions. The platform serves cancer patients, survivors, oncology teams, health plans, and employers, with expansion potential into North America and select regions in Europe.

Complement 1 operates on a B2B model, partnering with healthcare providers, health plans, and employers to offer its services. Revenue is generated through structured agreements, including subscription-based plans for access to the platform and coaching services. Clients incorporate these lifestyle modification services into their patient care offerings, enhancing treatment protocols. The platform's flagship service, the CoActive Coaching program, is central to its revenue model, reflecting a commitment to evidence-based interventions that deliver measurable health benefits to users.

In May 2025, Complement 1 raised USD 16. 00 mn in Seed funding to support the development of its coaching services and plans for expansion across the United States. The funding will bolster the company's strategy to enhance its offerings and reach a broader market, improving access to its services for cancer patients.