Heavy Metals & Brain Health Heavy metals are all around us—in water, soil, food, household products, and even the air we breathe. While small exposures may seem harmless, these metals can quietly accumulate in the body over time, creating long-term health effects that often go unnoticed. Among the systems most affected? The brain and nervous system. What the Research Shows A 2020 study published in Environmental Research  identified strong associations between exposure to hea