Alumni include a dental hygienist, a rabbinical student and someone who works at the World Bank.

WSJ: Remembering 'Heavy Metal Parking Lot'

That combination of attributes is what puts dental hygienist in the number one slot.

FORBES: The Best Jobs In Health Care

Now back in London, the dental hygienist had been half-way through a six-week trip, intending to go on to China.

BBC: India hotel jump woman recalls ordeal

She had worked as a dental hygienist and was known to be obsessively attentive to her teeth, getting them cleaned every 30 days.

FORBES: The FBI Creates The Most Effective Commercial Of The Year

Cindy Levering, a retired consulting actuary, was chatting with her dental hygienist recently about how being conscientious (i.e. flossing your teeth daily) adds to your life expectancy.

FORBES: Americans Clueless About Life Expectancy, Bungling Retirement Planning