The health benefits of cutting down on dietary saturated fatty acids and including higher levels of unsaturated fatty acids are well documented. Nutritional research is focusing on the effects of incorporating these healthier fatty acids, such as conjugated linoleic acid (CLA), into animal and human diets. CLA is present in dairy products and meat from ruminants and in very low amounts in our bodies. Classified as a nutraceutical or nutritional supplement, CLA is thought to change the balance between fat cells and muscle cells in the body and is currently on sale in health shops as a supplement to help people improve their body tone.