Biological Explanations of OCD: Neurochemical

Neurotransmitters allow for the transmission of nerve impulses from one cell to another across the synapse. Researchers have suggested that OCD is a product of a deficiency in serotonin or a malfunction in serotonin metabolism. Evidence for this claim comes from the results that antidepressant drugs can actually relieve the symptoms of OCD. SSRIs are the most effective at relieving symptoms as found by Zohar et al [1996], in their research the drug therapy was beneficial for at least 60% of patients. 

Furthermore, it has been proposed by Lambert and Kinsley [2005] that serotonin is a neuromodulator which regulates the levels of…