QuickStats: Age-Adjusted Daily Kilocalorie Intake Among Adults Aged 20--74 Years, by Sex --- National Health and Nutrition Examination Survey, US, 1971--2008

The average daily kilocalorie intake for men increased from the survey period 1971--1974 to 1988--1994 and then leveled off through 2007--2008. For women, the average daily kilocalorie intake increased from 1971--1974 to 1999--2000 and remained relatively stable through 2007--2008. From 1971--1974 to 2007--2008, men consumed more kilocalories on a daily basis than women.

http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6002a4.htm?s_cid=mm6002a4_e&s...