However, this was also the case with seasonal affective disorder and postpartum depression, which are now formally recognized in the Diagnostic and Statistical Manual of Mental Disorders.

There are nearly 54 million people around the world with severe mental disorders such as schizophrenia and bipolar affective disorder (manic-depressive illness),.

There is near universal agreement that we've had only modest progress in developing drugs for schizophrenia and affective disorders in the past several decades.