The researchers found 337 "portal" sites offering dangerous and addictive opioids, central nervous system depressants and stimulants on the federal list of controlled substances.

FORBES: "You've Got Drugs"

The post-Sudafed meth is more refined (rising from 50% purity to 80% since 2006) and thus more addictive and dangerous.

FORBES: Losing The War On Meth And Sudafed At The Same Time

Consistent with this, there is a case for restrictions on the way in which cigarettes are advertised and sold: because cigarettes are addictive and dangerous, children are at risk of being hooked by a bad habit before they are old enough to make a reasoned calculation of the odds.

ECONOMIST: Tobacco��s Brutus

When it comes to national governments, debt is alluring, addictive and dangerous.

FORBES: How Debt Limits A Country's Options

Researchers have uncovered some evidence that certain foods stimulate more dopamine release in mammals than others--critical to the legal argument that those foods are unreasonably addictive and dangerous--but their findings are tentative or difficult to replicate in humans.

FORBES: Food on the Brain