Fungal Overgrowth What Is Fungal Overgrowth (And Why It Matters) Fungi are everywhere — in the soil, water, air, and even inside the human body. In fact, some level of fungal presence is completely normal and plays a role in our internal ecosystem. But when fungal organisms begin to overgrow or become imbalanced , that’s when problems can start to surface. 👉 Fungal overgrowth is often overlooked, yet it can contribute to a wide range of health symptoms — some obvious, other