Neurotransmitter changes refer to the alterations in the levels or activity of chemical messengers in the brain. These chemicals, such as serotonin, dopamine, and norepinephrine, play crucial roles in regulating mood, behavior, and various bodily functions. Changes can occur due to factors like stress, diet, medications, or neurological disorders, impacting mental health and overall well-being. When neurotransmitter levels fluctuate, they can influence how signals are transmitted between neurons. For instance, low levels of serotonin are often linked to depression, while imbalances in dopamine can affect motivation and reward systems. Understanding these changes is essential for developing effective treatments for mental health conditions.