The round was led by Owl Ventures and Blume Ventures. The company is emerging from stealth to launch the first tech-enabled, clinically validated lifestyle modification platform for cancer patients and high-risk individuals-delivering personalized, daily guidance and education through one-on-one dedicated CoActive Coaches.

Complement 1 is a health technology company dedicated to transforming cancer care through lifestyle medicine. Founded in 2024, Complement 1 has developed the first clinically validated, tech-enabled lifestyle program with daily 1:1 dedicated CoActive Coaching for cancer patients, survivors, and those at high risk. By combining personalized coaching with evidence-based interventions in physical activity, nutrition, and somatic practices, Complement 1 helps patients improve outcomes and quality of life while reducing costs by up to 30% for employers, providers, and insurers. Backed by leading oncologists and scientific research, Complement 1's platform integrates seamlessly with conventional oncology care to deliver better outcomes and empower patients in their healing journey.