Perminder Sachdev

  • Scientia Professor of Neuropsychiatry, Centre for Healthy Brain Ageing (CHeBA), School of Psychiatry, UNSW
A blood test for dementia would be great, but there are limitations as to what blood can tell us about our brains. from www.shutterstock.com.au

How far off is a blood test for Alzheimer’s disease?

Blood has some disadvantages for diagnosis as it is separated from the brain by what is called the “blood brain barrier”. This makes it difficult to establish that a signal is actually coming from the brain.
Dementia rates may be falling but the downward trend won’t go on forever. ColinCramm/Shutterstock

Is the incidence of dementia declining?

It’s rare to hear good news about dementia, so two recent reports showing it may be becoming less common created a fair amount of excitement. Not a week goes by without some new promised therapy for dementia…
The DSM-5 doesn’t attempt to define what is “normal”; and having a DSM diagnosis is not the same as being “insane”. Image from shutterstock.com

Mental disorders: debunking some myths of the DSM‑5

The fifth edition of the Diagnostic and Statistical Manual of Mental of Mental Disorders (DSM-5) is due to hit psychiatrists’ and psychologists’ shelves next month. Produced by the American Psychiatric…

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