This study was published in the British Journal of Nutrition 1993 Mar;69(2):303-14
Study title and authors:
Diet and incident ischaemic heart disease: the Caerphilly Study.
Fehily AM, Yarnell JW, Sweetnam PM, Elwood PC.
Medical Research Council Epidemiology Unit, Llandough Hospital, Penarth, South Glamorgan.
This study can be accessed at: http://www.ncbi.nlm.nih.gov/pubmed/8387811
The study investigated the association between diet and heart disease. The study lasted for five years and included 2,512 men aged 45-59 years when first seen.
Regarding animal fat consumption the study found that men who consumed the most animal fat had a 10% reduced risk of heart disease compared to the men who consumed the least animal fat.