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Teen smoking decreases bone accumulation in girls, may increase osteoporosis risk
Date:12/3/2012

CINCINNATI Teenage girls who smoke accumulate less bone during a critical growth period and carry a higher risk of developing osteoporosis later in life, according to new research in the Journal of Adolescent Health.

In a study published Dec. 4, researchers at Cincinnati Children's Hospital Medical Center report the data can be useful for developing strategies to help prevent osteoporosis (a disease where bones lose mineral density and become brittle) and bone fractures. The study points to the largest negative impact on bone mineral density occurring in the lumbar region of the spine and the hips areas of particular fracture risk for older women with osteoporosis.

"Osteoporosis is a costly health problem affecting an estimated 10 million Americans, with an additional 34 million considered at risk," said Lorah Dorn, PhD., principal investigator and director of research in the Division of Adolescent Medicine at Cincinnati Children's. "To our knowledge this is the first longitudinal study to test and demonstrate that smoking by girls, as well as symptoms of depression, have a negative impact on bone accrual during adolescence."

Numerous studies have been conducted in adults showing a link between smoking and decreased bone density accrual. Dorn and her colleagues focused their research on adolescent girls as they progressed through their teens because this is when 50 percent of bone accrual occurs.

"As much bone is accrued in the two years surrounding a girl's first menstrual cycle as is lost in the last four decades of life," Dorn explained.

The researchers set out to determine the impact of smoking, symptoms of depression and anxiety and alcohol use on bone accrual in girls aged 11 to 19 years. The study enrolled 262 healthy girls from the Cincinnati area in age groups of 11, 13, 15 and 17 years.

The girls received annual clinical exams for three years at which measurements were taken for total bo
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Contact: Nick Miller
nicholas.miller@cchmc.org
513-803-6035
Cincinnati Children's Hospital Medical Center
Source:Eurekalert

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