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Related Experiment Videos

Diet, bone mass, and osteocalcin: a cross-sectional study

K Michaëlsson1, L Holmberg, H Mallmin

  • 1Department of Orthopaedics, Central Hospital, Västerås, Sweden.

Calcified Tissue International
|August 1, 1995
PubMed
Summary
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This study found no significant link between dietary calcium intake and bone mineral density (BMD) at key skeletal sites in healthy women. Other nutrients like protein and carbohydrates showed some associations with BMD.

Area of Science:

  • Nutrition Science
  • Bone Metabolism
  • Epidemiology

Background:

  • Understanding nutrient intake's impact on bone health is crucial for preventing osteoporosis.
  • Previous studies have yielded mixed results on calcium's role in bone mineral density (BMD).

Purpose of the Study:

  • To investigate the relationship between nutrient intake, bone mass, and bone turnover in women.
  • To assess the impact of dietary habits on BMD and bone turnover markers.

Main Methods:

  • A population-based, cross-sectional study of 175 women (aged 28-74) in Sweden.
  • Dietary assessment using a food frequency questionnaire and 1-week dietary records.
  • Bone mineral density (BMD) measured by dual-energy X-ray absorptiometry (DXA); serum osteocalcin measured.

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Main Results:

  • A weak positive association between dietary calcium and total body BMD in premenopausal women.
  • No association found between calcium intake and BMD at fracture-relevant sites (lumbar spine, femoral neck) or serum osteocalcin.
  • BMD was positively associated with protein and carbohydrate intake and negatively with dietary fat intake.

Conclusions:

  • Dietary calcium intake did not significantly affect BMD at fracture-relevant sites in this cohort of healthy women.
  • Detailed dietary assessment and adjustment for confounders suggest no direct impact of calcium on BMD at key sites.
  • Protein, carbohydrates, and fat intake may play a more significant role in bone mass than previously recognized.