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The 4 Reasons Why Diets Fail

why healthy diets fail

“Losing weight is one of the top resolutions made every year, yet only 20 percent of people achieve successful weight-loss and maintenance,” says Jessica Bartfield, MD, who specializes in nutrition and weight management as part of her internal medicine practice. And despite whole-hearted and good intentions, there are four main reasons diets fail.

Despite that fact that two-thirds of Americans say they “are on a diet” to improve their health, very few are actually successful at lowering their weight and BMI. “Dieting is a skill, much like riding a bicycle, and requires practice and good instruction,” says Dr. Bartfield. “You’re going to fall over and feel frustrated, but eventually you will succeed and it will get easier.”

Top Four Reasons Why Dieters Don’t Lose Weight

According to Dr. Bartfield, here are the top four reasons why many dieters fail to lose weight.

1. Underestimating Calories Consumed
Most people (even experts!) underestimate the number of calories they eat per day. Writing down everything that you eat- including drinks and “bites” or “tastes” of food – can help increase self-awareness. Pay attention to serving sizes and use measuring cups and spoons as serving utensils to keep portions reasonable. Food eaten outside of the home tends to be served in much larger portion sizes and typically has exponentially higher calories. Try looking up nutrition information of your favorite take-out meal or restaurant online beforehand, so that you can select a healthier option before ordering in or heading to a restaurant.

RELATED: See our tips for healthy junk food craving fixes.

2. Overestimating Activity and Calories Burned– Typically, you need to cut 500 calories per day to lose one pound per week. This is very difficult to achieve through exercise alone, and would require 60 minutes or more of vigorous activity every day. A more attainable goal would be to try to increase activity throughout the day and get a total of 30 minutes of moderate to vigorous exercise most days of the week. Buy a pedometer or fitness tracker and count your steps; try to increase to a goal of 10,000 steps per day. But be careful – exercise is not an excuse to eat more!

3. Poor Timing of Meals – You need a steady stream of glucose throughout the day to maintain optimal energy and to prevent metabolism from slowing down. Eat breakfast every day within one hour of waking up, then eat a healthy snack or meal every three to four hours. Try not to go longer than 5 hours without eating a healthy snack or meal to keep your metabolism steady.

4. Inadequate Sleep – Studies have shown that people who get fewer than six hours of sleep have higher levels of ghrelin, which is a hormone that stimulates appetite, particularly for high-carbohydrate/high-calorie foods. In addition, less sleep raises levels of cortisol, a stress hormone, which can lead to weight gain.

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