* gambling - 2-4% of adults and 4-6% of teenagers are addicted, and higher percentages lose money from it.<ref>http://www.optumanswers.com/research/articles/gambling.shtml</ref> | * gambling - 2-4% of adults and 4-6% of teenagers are addicted, and higher percentages lose money from it.<ref>http://www.optumanswers.com/research/articles/gambling.shtml</ref> |