Potassium is important for muscle function, fluid balance, and nerve signaling, but it is not directly responsible for building or maintaining bone mass. Some studies suggest that potassium may have an indirect effect on bone health by helping neutralize acids in the body that can otherwise leach calcium from bones. However, this role is secondary and not as well established as calcium’s fundamental structural contribution. Potassium is most commonly recognized for its role in cardiovascular health, especially in controlling blood pressure. While maintaining proper potassium intake is important for overall wellness, it won’t substitute the critical role calcium plays in bone formation and strength. For direct support of bone density and long-term skeletal health, calcium is the essential mineral.