A promising ultrasound therapy to potentially restore brain function in people with Alzheimer's disease has been licenced to a new start-up spun out of The University of Queensland.

Hints that the removal of amyloid plaques — which are a defining feature of Alzheimer's disease — may not be essential for improving cognition, could have implications for future treatments.

American neurosurgeon Ali Rezai is pioneering ways to try to help people with drug addiction and with Alzheimer's disease.