Qiana Sago, 32, of Inglewood, Calif., took part in a UCLA heart health study that used cell phones to improve participants eating and exercise habits. She lost weight during the study and reduced her high blood pressure medicine by half. (Francine Orr/ Los Angeles Times/TNS)
Smart phone technology being tested as a way to help people track their eating and activity and teach them healthful diet and exercise habits.
QIANA Sago knew she had a problem.
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