Trans-fatty acids in white adults decreased by 58% in the U.S. from 2000 to 2009 according to a Centers for Disease Control and Prevention (CDC) study published in a Research Letter in the Feb. 8 edition of the Journal of the American Medical Association.
The Centers for Disease Control and Prevention studied four major trans-fats, elaidic acid, linoelaidic acid, palmitelaidic acid and vaccenic acid, by measuring their levels in 229 fasting adults from the 2000 National Health and Nutrition Examination Survey and 292 from 2009 survey.
Those two study years bookend a Food and Drug Administration regulation that took effect in 2006 that required food makers to list the amount of trans-fats on product labels. Many food makers and restaurants began to drop them prior to the law taking effect, followed by some local and state health departments that required restaurants to limit their use of trans-fats, famously, New York City, then Philadelphia and California.
From the year 2000 to the year 2009, the overall decrease in trans-fatty acids was 58%. Specific decreases included elaidic acid (63%), linoelaidic acid (49%), palmitelaidic acid (49%), and vaccenic acid (56%).
This is the first time CDC researchers have been able to measure trans fats in human blood, the CDC said in a press release.
This research is a part of CDC′s National Biomonitoring program, which currently measures more than 450 environmental chemicals and nutritional indicators in people.
Unlike other dietary fats, trans fats are not essential to human health and do not promote good health, the CDC said in its release. The suspicion is that a lot of trans-fatty acids increase LDL cholesterol.