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The primary dietary sources of CLA are beef and milk, and Americans are eating less beef and drinking less whole milk in order to reduce their dietary intake of saturated fat. People often drink non-fat milk, but it's the fat content of the milk that contains CLA. Since skim milk contains virtually no CLA, those seeking to lose weight by using skim milk are depriving themselves of a potential source of this fat-reducing nutrient. Now, exercise to burn energy here's where the real problem occurs. In 1963, the exercise to burn energy CLA percentage in exercise to burn energy milk was as high as 2.81 percent. By 1992, the percentage of CLA in dairy products seldom exceeded 1 percent due to changing feeding patterns of cows. Cows that eat natural grass produce lots of CLA, while today's "efficient" feeding methods rely far less on natural grass. To illustrate, grass-fed Australian cows have three to four times as much CLA in their meat as American cows. As a result, most Americans have inadequate amounts of CLA in their diet.
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