Zemel (2004) has reviewed the role of calcium and dairy products in energy partitioning and weight management. He presents a convincing case that dietary calcium plays a key role in the regulation of energy metabolism. High-calcium diets attenuate adipocyte lipid accretion and weight gain during the overconsumption of an energy-dense diet, and increase lipolysis and preserve thermogenesis during caloric restriction, thereby markedly accelerating weight loss. Dairy products exert substantially greater effects than do equivalent amounts of calcium per se. The precise mechanisms for this effect are not yet clear. This effect has recently been confirmed in two randomized trials in obese African-American adults (Zemel et al., 2005).
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