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Dr. Ha completed a Ph.D. in Human Nutrition in 1999 and post-doctoral work at the Bone Mineral Metabolism Laboratory of the Ohio State University. Her research interests focus on nutrition education and osteoporosis prevention over the life span. Dr. Ha's recent research plans include studying: (1) the relationship between obesity, bone density and fracture in children; (2) dietary effects on bone density in children; (3) calcium and vitamin D status and bone density among the elderly; (4) effect of nutrition education on eating behavior and life style changes in college students.