Recent research has revealed that depressed patients have elevated levels of

A) dopamine.
B) cerebrospinal fluid.
C) serotonin.
D) cortisol.

Depressed Patients

Individuals diagnosed with depression, a mood disorder characterized by persistent feelings of sadness, loss of interest, and other emotional and physical problems.

Cortisol

A steroid hormone produced by the adrenal glands, involved in the body's stress response as well as metabolism and immune function.

Elevated Levels

Higher than normal amounts or concentrations of a particular substance or variable in a given context.