Bone turnover markers predict bone mass development in young adult men: a five-year longitudinal study

Area of Science:

• Bone biology and metabolism
• Osteoporosis research
• Adolescent and young adult health

Background:

• Peak bone mass is crucial for preventing osteoporosis later in life.
• Predictive markers for bone development in young adults are currently limited.
• Understanding early bone development is key to long-term skeletal health.

Purpose of the Study:

• To determine if baseline bone turnover markers predict bone development in early adulthood.
• To investigate the relationship between osteocalcin (OC) levels and bone accrual in men.
• To identify potential early indicators of bone health trajectory.

Main Methods:

• A 5-year longitudinal study of 817 men aged 19.
• Dual-energy x-ray absorptiometry (DXA) and peripheral quantitative computed tomography (pQCT) measured bone density and size.
• Analysis of serum osteocalcin (OC) and N-terminal telopeptide of type I collagen levels at baseline.

Main Results:

• Baseline osteocalcin (OC) positively predicted increases in bone mineral density (BMD) and bone mineral content (BMC) across multiple skeletal sites.
• Men with higher baseline OC levels showed significantly greater gains in radius cortical bone area and trabecular volumetric BMD.
• These associations remained significant for total body, lumbar spine, and radius measurements (P < .001).

Conclusions:

• Elevated osteocalcin (OC) levels at age 19 are a significant predictor of favorable bone development.
• Higher OC is associated with improved bone mineral density, bone mineral content, and bone size by age 24.
• This research offers a potential biomarker for predicting bone health trajectories in young men.