Three Weight-Loss Formulas
Posted by Virginia H. | Posted in Articles | Posted on 01-05-2010-05-2008
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We don’t know who coined the phrase “Numbers don’t lie,” but we’ll bet they never counted one or a few 100 calories. And if you’ve ever tried using math to manage the digits on your bathroom scale, you know that most diet equations don’t add up. We wondered whether any of the roughly 338,000 Google hits for “weight loss formula” can actually help you look good in that black latex cat suit this Halloween. Here’s the lowdown on three basics:
Daily Caloric Requirement (DCR)
Translation The math is pretty simple: Eat 500 fewer calories a day than your body requires and you’ll drop a pound a week. But most online calculators (and even the pen-and-paper variety) are only 82 percent accurate (even less so if you’re obese, sick, or an ethnic minority), according to the American Dietetic Association. And, says Mary Hartley, a registered nutritionist for about.com, the results can be flawed because the equation isn’t tailored to the individual and because many people misjudge their fitness level. Plus, if you lose 10 pounds or more, you’ll have to do the math again.
Salvation Let sites like caloriecount.about.com, mayoclinic.com, or mypyramid.gov do the work for you. All factor in activity level and are backed by health pros.
Resting Metabolic Rate (RMR)
Translation While DCR calculates calorie input (how much you need to eat), the Resting Metabolic Rate tabulates calorie output (how much you burn doing absolutely nothing). Unfortunately, the ADA says the accuracy of these formulas is 45 to 80 percent (and again, they’re less accurate if you’re obese).
