Clamor for CLA? Conjugated linoleic acid, or CLA, is making nutrition headlines lately as a possible bone booster. This naturally occurring trans fat is found in full-fat dairy products, beef and lamb, especially from grass-fed animals. A 2005 study reported that postmenopausal women with higher dietary CLA intakes had denser bones than women with lower intakes. How? Animal research hints that CLA may help preserve bone by inhibiting the activity of compounds that cause inflammation and bone breakdown—but until human studies confirm this, it's best to think of CLA as just one potentially healthful food component, and avoid supplements.