Osteoporosis and Obesity
Abstract
INTRODUCTION: This article concisely overviews the complex relationship between obesity and bone health. Obesity, characterized by excessive fat accumulation, has been traditionally associated with higher bone mineral density. Also, recent data suggest a favorable bone microarchitecture profile in these patients. However, the increase in bone mineral density does not necessarily confer protection against fractures, and the risk of fractures may vary depending on the skeletal sites.
FACTORS AFFECTING BONE HEALTH: Various factors, including mechanical factors, hormones, cytokines, inflammation, and bone marrow adiposity, contribute to the adverse effect of obesity on bone. The article explores these factors alongside non-invasive techniques and tools like the Fracture Risk Assessment (FRAX) to evaluate fracture risk.
BONE AND ADIPOSE TISSUE: This article also highlights the essential roles of hormones such as vitamin D, Parathormone (PTH), FGF-23 (Fibroblast Growth Factor 23), which affect bone health, and some of the hormones secreted from the adipose tissues such as adiponectin and leptin.
OBESITY PARADOX AND SARCOPENIC OBESITY: The article delves into the intriguing obesity paradox, where an increased BMI correlates with higher bone mineral density but not necessarily reduced fracture risk. Sarcopenic obesity, a combination of excessive fat accumulation and reduced muscle mass, further complicates the relationship between obesity and bone health.
CONCLUSIONS: Physicians…
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