After searching 12 years for bipolar disorder's cause, research team concludes it has many

Nearly six million Americans have bipolar disorder, and most have probably wondered why. After more than a decade of studying over 1,100 of them in-depth, a team of scientists has an answer — or rather, seven answers….

Nearly six million Americans have bipolar disorder, and most have probably wondered why. After more than a decade of studying over 1,100 of them in-depth, a team of scientists has an answer — or rather, seven answers….