![]() ![]() The women’s progress was assessed at three and six months-long enough to detect a significant difference in weight loss among these relatively motivated calorie counters. The researchers randomly assigned more than 200 overweight middle-aged women to one of two groups: one used MyFitnessPal as a weight-loss aid, the other talked to a primary care doctor about weight issues but did not use MyFitnessPal. The app calculates the number of calories consumed and compares them to the daily calorie goal, which the app computes based on the user’s current weight, goal weight, and desired rate of weight loss. A user can access a database of more than 4 million foods, and add what he or she ate to a daily log. MyFitnessPal is a web-connected food journal and weight loss coach. The company claims it has more than 50 million registered users. It is based on research on how people make changes in their habits. ![]() University of California, Los Angeles researchers put to scientific scrutiny a free app called MyFitnessPal. Now the tough question: Do they actually work? A study published this week in the Annals of Internal Medicine on one popular weight-loss app finds that the answer is “not so much.” According to one estimate, the number of health apps for phones may already top 40,000. Many health entrepreneurs are trying to harness that power to help people to get healthier. Smartphones and tablets combine an extraordinary amount of portable computing power with connectivity to the world via cell phone signal and WiFi. ![]()
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