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H. Blair Simpson, M.D., Ph.D.
November 03, 2011

“The simple answer is that we don’t know what causes OCD … We have a lot of clues … We think OCD is caused by some combination of genes, the environment and development …”




Helen Blair Simpson, M.D., Ph.D.
2010 NARSAD Independent Investigator Grantee
Professor of Clinical Psychiatry
Director of the Anxiety Disorders Clinic
New York State Psychiatric Institute

H. Blair Simpson, M.D., Ph.D.
Q Is OCD heritable?
A “… it seems that early onset OCD, meaning people who have an onset of OCD... More >
H. Blair Simpson, M.D., Ph.D.
Q What are some of the common myths about OCD?
A "One is that OCD is not a severe disorder… in fact, OCD is a very severe... More >