How Anxiety Affects the Body

Did you know anxiety disorders are more common than depression in the U.S? Anxiety has both an emotional and brain-body/neurological component, and is often associated with low levels of serotonin. Neurotransmitters control movement, heart rate, thinking, sleep, mood, and reasoning.

What is the primary function of serotonin? How are serotonin levels an important factor in both anxiety and depression?