War on Obesity Goes High-Tech

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The fight against fat has gone high-tech. Scientists are using new wireless sensors to get more accurate data on people who are overweight and obese.

The subjects of the study wear the sensors as they go about their daily lives and it feeds information back to the scientists for their research.

Donna Spruijt-Metz is a child obesity expert at the University of Southern California. She explained the sensors are able to indentify how much, if any work out time obese people do, how much food they eat and whether they are at a fast food restaurant, when they should be at the park instead.

Researchers say using this type of technology helps bypass their test subjects self-reporting.

However, some medical experts are concerned the new monitors may intrude too much on the private lives of the people they're studying.

''As a researcher, I'm a professional voyeur, and I like to find out whatever I can about human subjects,'' said William McCarthy, a professor of public health and psychology at the University of California, Los Angeles.

''But if I were a subject," he said. "I'd be concerned about the level of detail that's being captured about my behavior from moment to moment.''

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