Bethany Eggers, Ma, Lpc-mh
Wednesday, February 25, 2026
Mental health is often described in emotional or behavioral terms, but at its core, it is deeply rooted in the brain. Every thought, mood, memory, and reaction begins with complex biological processes inside this remarkable organ. The brain is responsible for regulating mood, decisionmaking, memory, sleep, appetite, and stress responses. It communicates through billions of nerve cells called neurons, which send signals using chemicals known as neurotransmitters. According to the National Institute of Mental Health, mental illnesses are associated with changes in brain structure, chemistry, and function. These changes can affect how a person thinks, feels, and behaves.