Abstract
A study of the relation between dietary fat intake and salivary prostaglandin E2 was undertaken in Transkei, South Africa. Samples of saliva were obtained from (1) Transkeians on a very low fat diet, (2) Transkeians on a low fat diet, (3) Transkeians on a medium fat diet, (4) British patients. Salivary PGE2 means for the groups were (1) 2357 pg/ml, (2) 2020 pg/ml, (3) 733 pg/ml, (4) 312.5 pg/ml. Differences between groups 1 and 3, 1 and 4, and 2 and 4 were significant. Rural Transkeians on a low-fat diet have an elevated level of PGE2 in saliva. As fat increases in the diet, PGE2 in saliva tends towards the level found in those who eat a western diet. An increase in the level of PGE2 production in the upper gastrointestinal tract and in the tissues of the body may be a factor in promoting cancer of the esophagus and diseases favored by Th1 immune dysfunction.
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