Chief executive of the mental health charity Sane, Marjorie Wallace, has expressed concern about the possible impact on cannabis use. She said:
If the report is to be responsible, it must take account of the specific damage that cannabis can do to the developing brain, not only as recent studies have shown inducing irreversible cognitive deterioration but in around 10% of cases triggering severe psychotic illness.
More top news
A mother has been arrested on suspicion of attempted murder after her three young children were found with their throats cut.
Ex-Cuban leader Fidel Castro has broken his silence over Cuba and the United States' attempts to repair diplomatic relations.
David Cameron has pledged to reduce the annual benefits cap to £23,000 "within the first few days" of a Conservative election win.