RT Journal
A1 Brandt E
T1 TRans-fatty acid levels in white adults
JF JAMA
JO JAMA
YR 2012
FD June 13
VO 307
IS 22
SP 2370
OP 2371
DO 10.1001/jama.2012.5146
UL http://dx.doi.org/10.1001/jama.2012.5146
AB 
The authors found a similar decrease in all 4 TFAs studied. Various TFA-containing foods have profiles with specific TFA content. For example, ruminant TFAs, derived mostly from dairy products, are primarily vaccenic acid and cis-9,trans-11 conjugated linoleic acid (C9,T11-CLA), while TFAs from industrial sources are mostly elaidic acid.2- 3 Only 13% to 17% of vaccenic acid intake comes from hydrogenated plant oils.3 If the change in TFAs observed in the study is attributed solely to 2003 legislative changes, one would expect to have found decreases in all TFAs but with less alteration to vaccenic acid.