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Miriam E. Nelson, Ph.D Responds:
Miriam E. Nelson, PhD, of Tufts University and the best-selling author of the Strong Women book series, responds: In thinking about weight loss, measuring how your clothes fit is an excellent indicator. For instance, as you begin an exercise program and healthy eating plan, you may begin to have a shift in body composition, with less fat and more muscle. This may not show on a scale initially, and it may not be evident on common measures of body fat--such as skin-fold caliper tests and special bioelectrical impedance scales that determine body fat and muscle as well as body weight. Still, when your clothes fit more loosely, that can be an indication of noticeable progress.
For general health, body mass index (BMI) is a good measure to determine if your weight puts you at increased health risks (starting at BMI greater than 25). Your BMI takes into account your body weight in relation to your height.
To determine your BMI, check the chart at www.nhlbi.nih.gov/guidelines/obesity/bmi_tbl.htm Measuring your body fat is also worthwhile to a certain extent. Just be aware that the commonly available techniques or tools for measuring body fat are not flawless--they measure only within a certain margin of error, and they may not be as sensitive to small changes over time. Certain tools, like skin-fold calipers, are difficult to use on yourself. A combination of BMI and how your clothes fit is probably the best way to keep track of your progress.
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Miriam E. Nelson
Ph.D
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