Are mental illnesses less frequent in "primitive societies"? What about suicide and anorexia, in particular?

What percent of Down's Syndrome patients develop Alzheimer's?

Is it true that antipsychotic drugs can produce Parkinson's disease in the long run?

Please define residual schizophrenia. What are the symptoms? Are there any known treatments for this condition?

Is it beneficial or destructive for mentally ill patients to be surrounded by others with the same or other mental disorders?

If a gene is detected that is responsible for psychiatric diseases, how is it treated? How can we prevent it from being expressed?

Aside from helping with disorders, does cognitive behavioural therapy (CBT) help improve creativity?  

How many years does it take Alzheimer's Disease to develop before it can be diagnosed?

Is there a connection between depression and sleep apnea? If so, what is it?

For years, I've woken up in the morning with overwhelming anxiety. Is this normal?