Researchers say untangling the relationship between inflammation and C-reactive protein can lead to better treatment of depression and anxiety.<br />C-reactive protein is made by the liver and released into the bloodstream in response to inflammation.<br />UPI reports a new analysis from the Netherlands says immune reactions linked to depression and anxiety may lead to better screening and treatment of both.<br />The researchers compared blood test findings from adults with depression, anxiety, or both to those of healthy controls.<br />They observed that those with depression alone had elevated C-reactive protein, while those with anxiety alone did not.<br />Depression has been associated with disturbances in the body's immune system and metabolism.<br />Also, depressed people tend to have different biochemical markers to those of healthy people.