Inflammation Related to Muted Pleasure Feelings in Depression

About one third of people with depression have high levels of inflammation markers in their blood. New research indicates that persistent inflammation affects the brain in ways that are connected with stubborn symptoms of depression, such as anhedonia, the inability to experience pleasure.

The results were published online in Molecular Psychiatry.

The findings bolster the case that the high-inflammation form of depression is distinct, and are guiding researchers’ plans to test treatments tailored for it.

Anhedonia is a core symptom of depression that is particularly difficult to treat, says lead author Jennifer Felger, PhD, assistant professor of psychiatry and behavioral sciences at Emory University School of Medicine and Winship Cancer Institute.

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