Does cannabidiol protect against the harmful effects of THC in cannabis?

Cannabis has long been associated with poor memory, but new research suggests that the
strain of cannabis makes all the difference1. In a test of memory, only users of ‘skunk’-type
strains exhibited impaired recall when intoxicated, whereas people who smoked hashish or
traditional herbal cannabis performed equally well whether they were stoned or sober.
These findings suggest that an ingredient more plentiful in some types of cannabis than in
others may help to reduce memory loss.