Still, while favorite fair confections will no longer be fried in trans fat, deep-fried candy bars and their ilk will continue to be packed with belly-expanding calories.

NPR: State Fair Takes the (Bad) Fat Out of Funnel Cakes

"Trans fat is a no brainer: We've known about it for 30 years, " she says.

FORBES: Magazine Article

No doubt investors will carefully gauge consumer reaction to the switch to trans-fat free oil, particularly on the taste on its signature fries.

FORBES: McDonald's Arches Still Golden