The pharmaceutical company Novartis is challenging the use of a cheaper alternative to its drug Lucentis for a common cause of loss of vision.

A County Antrim woman speaks of how drugs turned her happy child into a withdrawn and agitated teenager.

Global efforts to cut the number of deaths from measles have fallen short of World Health Organization (WHO) targets.

Traces of ancient viruses which infected our ancestors millions of years ago are more widespread in us than previously thought.

Three-dimensional images of tissue samples could help spot cancer early, say researchers.

Comedian and actor Russell Brand has told MPs taking drugs should not be seen as a "criminal or judicial matter" but a "health issue".

Labour peer Robert Winston said there was a "strong case" for the decriminalisation of drugs, arguing that the policy of prohibition used around the world was not working.

Comedian Russell Brand tells MPs that taking drugs should not be seen as a "criminal or judicial matter" but he does not favour complete legalisation.