Marion Nestle,Malden Nesheim

Why Calories Count

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Calories—too few or too many—are the source of health problems affecting billions of people in today’s globalized world. Although calories are essential to human health and survival, they cannot be seen, smelled, or tasted. They are also hard to understand. In Why Calories Count, Marion Nestle and Malden Nesheim explain in clear and accessible language what calories are and how they work, both biologically and politically. As they take readers through the issues that are fundamental to our understanding of diet and food, weight gain, loss, and obesity, Nestle and Nesheim sort through a great deal of the misinformation put forth by food manufacturers and diet program promoters. They elucidate the political stakes and show how federal and corporate policies have come together to create an “eat more” environment. Finally, having armed readers with the necessary information to interpret food labels, evaluate diet claims, and understand evidence as presented in popular media, the authors offer some candid advice: Get organized. Eat less. Eat better. Move more. Get political.
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418 printed pages
Original publication
2012
Publication year
2012
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Quotes

  • Soliloquios Literarioshas quoted5 years ago
    In speaking about the energy content of foods and the effects of food energy in the body, we try to be consistent about using heat as one form of energy and calories as a way to measure the amount of heat energy. With the main sources of calorie-related confusion
  • Soliloquios Literarioshas quoted4 years ago
    Physiologists have their own language for reporting the results of oxygen uptake experiments. They do not report results in calories. Instead, they use the term metabolic equivalents (METs). METs are rates of oxygen uptake per minute corrected for body weight, sustained by a rate of oxygen consumption of 3.5 ml/kg body weight/min. At a body weight of 125 pounds, 1 MET equals 1.0 calorie per minute (as given in table 10). But at a body weight of 155 pounds, 1 MET equals 1.2 calories, reflecting the higher energy requirement. These numbers are derived like so: 1 liter of oxygen corresponds to about 5 calories, or 0.005 calorie per ml, and 1 MET is defined as 3.5 ml of oxygen/kg/min in adults. Therefore a MET is also 0.0175 kcal/kg/min (3.5 × 0.005). For a 70 kg (155 lb) person, the calculation is 70 × 0.0175 = 1.225 METS. For a 57 kg (125 lb) person, it's 57 × 0.0175 = 0.9975 MET.
  • Soliloquios Literarioshas quoted4 years ago
    Do overweight people gain weight more quickly than so-called normal-weight people?

    No, they do not. The number of calories needed to gain weight depends on the initial body weight and body fat content. Once people are overweight, they seem to deposit a larger proportion of excess calories as fat than do lean individuals. Fat tissue takes more excess calories to deposit—it stores more calories—than lean tissues. Overweight people must eat more calories than lean people to increase their body fat stores and gain weight.8
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