Association Between HDL-C and Bone Mineral Density: An Cross-Sectional Analysis

Area of Science:

• Endocrinology
• Bone Metabolism
• Lipidology

Background:

• Dyslipidemia is a potential risk factor for osteoporosis.
• The relationship between blood lipid levels and bone mineral density (BMD) is not fully understood.
• Previous studies have yielded controversial findings regarding lipids and BMD.

Purpose of the Study:

• To investigate the association between blood lipid profiles and BMD.
• To determine if specific lipid parameters correlate with BMD measurements.
• To explore potential modifying effects of demographic and lifestyle factors on this relationship.

Main Methods:

• Utilized data from the large-scale MIDUS II study.
• Employed multivariate linear regression models and smooth curve analysis.
• Controlled for a comprehensive range of confounding factors including demographics, lifestyle, and medical history.

Main Results:

• A significant negative association was observed between high-density lipoprotein-cholesterol (HDL-C) and BMD at multiple skeletal sites, including the femur and radius.
• This inverse relationship between HDL-C and BMD persisted after adjusting for numerous covariates.
• Age, sex, and body mass index (BMI) were identified as significant modifiers of the HDL-C and BMD association.

Conclusions:

• The study confirms a negative association between HDL-C levels and BMD.
• This finding suggests a potential role for HDL-C in bone health.
• Age, sex, and BMI critically modulate the relationship between HDL-C and BMD, highlighting the need for personalized risk assessment.