In the Woody Allen movie "Sleeper", he wakes up after having been asleep for 40 or 50 years to discover that scientists have determined that steaks and french fries are actually the healthiest diet one can eat.

We haven't quite reached that point but an article in the news section of OCF,

http://www.oralcancerfoundation.org/news/story.asp?newsId=1134

reports that a study of 49,000 women failed to show a difference in the incidence of cancer and/or heart disease related to diet.

The money line:
"In the end, those assigned to a low-fat diet had the same rates of breast cancer, colon cancer heart attack and stroke as those who ate whatever they pleased"

Go figure! - Sheldon