Why was aluminium thought to be a factor in Alzheimer's Disease?

Is there a link between mad cow disease and Alzheimer's?

What about propanolol for treating anxiety?

I've read that patients suffering from schizophrenia have high levels of dopamine. Are high dopamine levels the cause of schizophrenia or a consequence?

What do you think of the use of natural products like St. John's Wort to treat moderate anxiety and depression?

Do we tend to have more phobia/anxiety with age? Are we a little more phobic and anxious than we were 10 years ago?

Is it possible to diagnose an 8-year-old child with schizophrenia? Can schizophrenia be detected in children? And if so, how might the treatment of a schizophrenic child differ from that of an adult?

If some phobias are evolutionary in nature, why are people afraid of modern objects like airplanes, elevators, and escalators?

Is electric shock therapy still used and, if so, what are the risks associated with it?

Could someone who is depressed heal over time on their own?