31. On average, between 5 and 10 percent of Americans suffer from seasonal affective disorder , Rosenzweig said. 32. His wife was suffering from schizo-affective disorder at the time and had been off her medication. 33. There is evidence to suggest that GABA transporters are linked to epilepsy, affective disorders , and schizophrenia. 34. Because they are diurnal, sand rats are also used as models for human seasonal affective disorder . 35. Mental-health research has shown that some individuals suffer from what is know as seasonal affective disorder . 36. Schizoaffective disorder is a category used for individuals showing aspects of both schizophrenia and affective disorders . 37. Q . Does winter light from my southern window make vitamin D or prevent seasonal affective disorder ? 38. Seasonal affective disorder is its quaint moniker. 39. Winter depression, also known as seasonal affective disorder , afflicts as many as 20 percent of the population. 40. His attorney, Patricia Chappell, pointed to his mental illness, diagnosed as schizo-affective disorder , as a mitigating factor.