, Volume 40, Issue 1 Supplement, pp s187-s190

Body composition in advanced-stage Parkinson’s disease

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Little is known about body composition in Parkinson’s disease (PD). We studied 35 patients (20 male, 15 female subjects; mean age 69.7±5.8 years) with advanced PD by anthropometry, dual-energy X-ray absorptiometry (DEXA), and serum 25-OH vitamin D measurement. Over 70% of patients had a disease duration of more than 4 years; all were on L-dopa treatment. Low levels of serum 25-OH vitamin D were present in 41% of the patients. The mean body mass index (BMI) was 25.3±4.3 kg/m2 (range 17.1–37.3). Mid-arm muscle circumference was below the 10th percentile in 23%. For whole-body mean (±SD) bone mineral density, the T score was below -1 SD in 35% of patients, and the Z score was below -1 SD in 24%. Percent fat mass measured with DEXA was 30.6±11.4% (range 10.1–45.5) in the overall sample; it was 21.1±8.8% (range 10.1–30.4) in male subjects and 38.1±9.2% (range 25.8–45.5) in female subjects. We conclude that advancedstage PD may show excess adiposity coexisting with depletion of lean body mass (sarcopenic obesity), in addition to decreased whole-body bone mineral density associated with low serum 25-OH vitamin D. A low level of physical activity and inadequate exposure to sunlight are likely to be among the putative causes.