MBX Capital is a venture capital fund with a "deep health" thesis that treats health as a systems problem, investing across biology, chemistry, AI/ML, robotics, and clinical medicine to back companies addressing root causes of environmental health and healthcare infrastructure challenges rather than just treating downstream disease. The fund operates with a private "Atom Network" of hundreds of scientific and clinical experts who help source and vet investments, allowing MBX to bridge hard science platforms with clinical care access under one coherent thesis while maintaining concentrated ownership through $1-2.5M first checks targeting at least 5% equity.