New drug raises hopes of reversing memory loss in old age

Toronto researchers believe the drug can also help those with depression, schizophrenia and Alzheimer's

An experimental drug that bolsters ailing brain cells has raised hopes of a treatment for memory loss, poor decision making and other mental impairments that often strike in old age.

The drug could be taken as a daily pill by over-55s if clinical trials, which are expected to start within two years, show that the medicine is safe and effective at preventing memory lapses.