Neurotransmission Understanding Neurotransmission and Its Impact on Mental Health Neurotransmission is a foundational process that governs how our brain and nervous system function. When this process is disrupted, it can affect mood, cognition, focus, emotional regulation, and overall mental well-being. What’s often overlooked is how environmental toxins — including heavy metals, mold, fungus, and parasites — can interfere with neurotransmission at multiple levels. What Is Ne