Weight Loss Prediction Calculator

Try grilling pineapple for a tasty change of pace.

For years we’ve used the “rule” that to lose one pound a week you would have to deficit 500 calories a day, or 3500 calories in a week. A panel of experts in weight management, energy metabolism, physical activity, and behavior have determined that this rule has generated unrealistic expectations about weight loss and should be discarded.

Researchers have developed a new weight loss prediction calculator which takes into account the reduced energy expenditure that occurs as we lose weight. This new calculator provides a slower but more realistic weight loss rate. Assuming a daily deficit of 500 calories a day, the old 3500 calories per pound rule projects a weight loss of 52 pounds in one year. The newer calculator estimates the weight loss at the end of one year would actually be closer to 25 pounds and it would take about three years to lose another 22 pounds.

Although this might sound discouraging, it may help validate the experience of many people who have questioned why they were not losing at the “expected rate” using the old rule. You can check out the new weight loss prediction calculator here.

Zestar Diet Pilot automatically adjusts your meal recommendations as you lose weight to help offset these natural changes in your metabolism.

Grilled Pineapple with Balsamic Honey Glaze

Get adventurous! Grilling brings out the sweetness of pineapple which is complemented by this tangy glaze.

Serves 4.

  • 1/3 cup white balsamic vinegar
  • 2 tbsp honey
  • 1/4 tsp Chinese 5-spice powder (or you can substitute cinnamon instead)
  • 1 pineapple, peeled, cored, and cut into spears or slices

    1. In a large bowl, whisk together the vinegar, honey, and spice. Add pineapple a few slices at a time, tossing to coat.


  1. Grill until warmed and marked on both sides, 5-7 minutes, turning halfway through cooking. Brush with remaining glaze as it cooks. Serve warm with a scoop of vanilla frozen yogurt. Yum!

Sharon Lehrman, MPH, RD, LD, is a registered dietitian with a private practice and corporate wellness business in Minneapolis, Minnesota. You can read health-related articles, subscribe to her free monthly nutrition newsletter, or contact her at www.nutritionhealthandwellness.com.

Read Sharon's full bio

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