The UK has launched the Biobank, the largest and most detailed database, which includes medical and genetic data, as well as lifestyle information, on 500,000 islanders aged 40 to 69.
The US government is launching a major new anti-smoking campaign using photographs of people who have suffered serious health problems due to the habit.
The world is on the brink of a crisis caused by antibiotic resistance, World Health Organization chief Margaret Chan said at a conference in Copenhagen on Friday.