Recently many researches have shown that unsaturated trans-10, cis-12 C18:2 inhibit tumors growth in colon and gastric cancer cell lines; as well, cis-9, trans-11 C18:2 may be efficacious in reducing risk of breast cancer in premenopausal women. The studies published about antidiabetic effect of conjugated linoleic acid isomers (CLA) also indicated that either cis-9, trans-11 C18:2 or trans-10, cis-12 C18:2 increase insulin resistances in obese men with metabolic syndrome. It has also been shown that trans-10, cis-12 C18:2 is responsible for the body mass reduction and weight change (McCrorie...