Human beings are unable to convert linoleic acid into the needed amount of conjugated linoleic acid. Decreased in-take of conjugated linoleic acid and alterations in the manner of production and processing of the foods

Some scientists believe that in our quest to lose weight, we are not eating enough fat, or at least not the right kind of fat. The fat that is missing from our diet is conjugated linoleic acid (CLA), which is found in red meat, lamb, and dairy products. Although these foods contain some of this good fat, they do not get a clean bill of health, since they are very high in calories and are also packed with saturated fat, which can promote cancer and heart disease.