“Generation X” is a term that was popularized in 1991 to describe people born between the early 1960s and the early 1980s. “Generation XL” (“XL” meaning “extra large”) describes a generation of children who are overweight. “Generation XL” has been cited in print in 1994 and 1999 and was used in several book titles in the 2000s.
 
“Generation XL” was the Urban Dictionary’s Urban Word of the Day for October 9. 2012.
 
   
Wikipedia: Generation X
Generation X, commonly abbreviated to Gen X, is the generation born after the Western post–World War II baby boom. Demographers, historians and commentators use beginning birth dates from the early 1960s to the early 1980s.
 
The term was popularized by Douglas Coupland’s 1991 novel Generation X: Tales for an Accelerated Culture.
 
7 November 1994, Rockford (IL) Register Star, “Foreman a champ for all the ages” by Mike LoPresti (Gannett News Service), pg. 5D, col. 6:
Why not we aging, expanding Americans? Generation XL?
 
24 October 1999, The New Mexican (Santa Fe, NM), “Obese,” pg. A2, col. 2:
Before long, Generation X might be replaced with Generation XL.
 
Google Groups: alt.writing
Edwin J. Noonan
10/27/99
IT’S NOW GENERATION XL AND A NATION OF FATSOES
In a new study released today in the Journal of the American Medical Association, the U.S. Centers for Disease Control says the country is experiencing “a sweeping epidemic of obesity.”
 
60 Minutes
Generation XL: fighting fat
Sunday, September 10, 2000
Our children are getting fatter. Fast food and hours spent playing video games and watching television are producing a generation of extra large kids.
 
OCLC WorldCat record
Toward generation XL: anthropometrics of longevity in late 20th-century United States.
Author: M Sunder
Edition/Format:   Article : English
Publication: Economics and human biology, 2005 Jul; 3(2): 271-95
Database: From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
Other Databases: British Library Serials
Summary:
All-cause and cause-specific mortality among white U.S. men and women are analyzed using the NHANES I data (1971-1975) and epidemiologic follow-up to 1992, to examine the effect of physical stature on mortality, controlling for other confounding variables within a discrete-time framework. We find an association between mortality and both body mass index (BMI) and height, but the height effect is sensitive with respect to the age range under consideration. Although the resulting minimum-mortality BMI is higher than the widely accepted healthy range, the recent increase in weight implies that further gains in life expectancy are unlikely to derive from the anthropometry-mortality relationship.
 
OCLC WorldCat record
Generation XL : raising healthy, intelligent kids in a high-tech, junk-food world
Author: Joseph Mercola; Ben Lerner
Publisher: Nashville, Tenn. : Thomas Nelson, ©2007.
Edition/Format:   Book : English
Summary:
A detailed guide to giving children a vibrant, successful future and a healthy, wholesome, invigorating youth ; teaches parents about the importance of good nutrition and the profound effects that inactivity, addiction to media, and super-sized and sugar-laden diets can have on their children.
 
OCLC WorldCat record
Generation XL : the childhood obesity pandemic : a community-based solution
Author: Paul R Ehrmann
Publisher: [Warren, MI] : ML Publishing Group, ©2008.
Edition/Format:   Book : Biography : English
Summary:
Dr. Ehrmann presents the award-winning Children’s Health Initiative Program (CHIP) which is a nonprofit, no-cost, community based healthy living program for children and their families.
 
Urban Dictionary
Generation XL
October 9, 2012 Urban Word of the Day
A generation of obese kids.
I belong to the generation X.
My 6 years old cousin definitely belongs to the generation XL.
by CompleteStranger Oct 5, 2009