At least five people are affected for every problem gambler, says the report.

ECONOMIST: Australia

One study on gambling addiction finds that living within 80km of a casino makes someone twice as likely to become a problem gambler.

BBC: The high-low split of gambling cities

Pfizer's trail of woe, reflected in a 40% share price decline since 1998, is a result of an affliction known to every problem gambler: the delusion that skill can overcome chance.

FORBES: Drug Drought