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ADHD medications associated with diminished bone health in kids
Date:3/3/2016

ORLANDO, Fla., March 3, 2016 /PRNewswire-USNewswire/ -- Children and adolescents who take medication for attention-deficit hyperactivity disorder (ADHD) show decreased bone density, according to a large cross-sectional study presented today at the 2016 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS).

"This is an important step in understanding a medication class, that is used with increasing frequency, and its effect on children who are at a critical time for building their bones," said senior study author Jessica Rivera, MD, an orthopaedic surgeon with the U.S. Army Institute of Surgical Research.

ADHD is a common neurobehavioral condition often diagnosed in childhood. The U.S. Centers for Disease Control and Prevention (CDC) estimate 6.4 million children were diagnosed with ADHD through 2011. In addition, the CDC says that parents reported 3.5 million children and teenagers taking medications to treat ADHD, a 28 percent increase from 2007—2011.

In this study, researchers identified 5,315 pediatric patients in the CDC's National Health and Nutrition Examination Survey (NHANES) and compared children who reported taking ADHD medications with survey participants not on these medications. The results indicate that children on ADHD medication had lower bone mineral density in the femur, femoral neck and lumbar spine. Approximately 25 percent of survey participants on ADHD medication met criteria for osteopenia, a condition characterized by lower than normal peak bone density, and this was significantly higher compared to participants not on medication.

Dr. Rivera added that a definite link has not been established between osteopenia in childhood and osteoporosis later in life, which increases the risk of brittle and porous bones, and ultimately, fracture risk. However, low-bone density in children theoretically could have long-term implications and lead to poor bone health in adulthood because childhood and adolescence is when growing bones accrue mass and strength.

Medications used by patients in the study were: methylphenidate (Ritalin), dexmethylphenidate (Focalin), dextroamphetamine (Dexedrine), atomoxetine (Strattera) and lisdexamfetamine (Vyvanse). These medications can cause gastrointestinal problems such as decreased appetite and stomach upset, which may result in poor nutrition and reduced calcium intake. The drugs also may diminish bone density because they alter the sympathetic nervous system, which plays an important role in bone remodeling, or regeneration.

Dr. Rivera said that because most skeletal growth occurs by ages 18-20, physicians should realize the potential threat that ADHD medications pose to maturing bones and consider nutritional counseling and other preventative measures.

In addition, "Parents of patients taking ADHD medications should be informed of potential bone loss, especially if the findings of this study are validated in prospective studies," said Dr. Rivera.

The study's statistical model ruled out other potential causes of low bone density including age, sex, race/ethnicity and poverty levels. The study did not take into account information on medication dose, duration of use, or changes in therapy because of the limitations of the NHANES survey data.

This study recently appeared in the online edition of the Journal of Pediatric Orthopaedics.

Study Abstract

View the 2016 AAOS Annual Meeting Disclosure Statements

The American Academy of Orthopaedic Surgeons
With more than 39,000 members, the American Academy of Orthopaedic Surgeons (AAOS) is the world's largest association of musculoskeletal specialists. The AAOS provides education programs for orthopaedic surgeons and allied health professionals, champions and advances the highest musculoskeletal care for patients, and is the authoritative source of information on bone and joint conditions, treatments, and related issues.

Visit AAOS at:
Newsroom.aaos.org for bone and joint health news, stats, facts, images and interview requests.
ANationinMotion.org for inspirational patient stories, and orthopaedic surgeon tips on maintaining bone and joint health, avoiding injuries, treating musculoskeletal conditions and navigating recovery.
Orthoinfo.org for patient information on hundreds of orthopaedic diseases and conditions.
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Twitter.com/AAOS1

 


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SOURCE American Academy of Orthopaedic Surgeons
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