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Related Experiment Video

Updated: Jul 19, 2026

Protocol for Assessing the Relative Effects of Environment and Genetics on Antler and Body Growth for a Long-lived Cervid
09:09

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Published on: August 8, 2017

Methodological issues in comparing genetic and environmental influences on bone mass.

P D Ross1, H Orimo, R D Wasnich

  • 1Kuakini Medical Center, Honolulu, HI 96817.

Bone and Mineral
|August 1, 1989
PubMed
Summary

Japanese-Americans exhibit higher bone mineral content (BMC) and bone mineral area (BMA) than Japanese individuals, suggesting environmental factors significantly impact bone health.

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Area of Science:

  • Anthropology
  • Bone Biology
  • Comparative Osteology

Background:

  • Bone mineral content (BMC), bone width (BW), and bone mineral area (BMA) are key indicators of bone health.
  • Understanding ethnic and environmental influences on bone mass is crucial for public health.
  • Previous studies suggest variations in bone density across different populations.

Purpose of the Study:

  • To compare BMC, BW, and BMA in Japanese and Japanese-American men and women.
  • To investigate the influence of ethnicity and environmental factors on bone parameters.
  • To adjust for potential measurement technique differences.

Main Methods:

  • Measurements of BMC, BW, and BMA were taken at the proximal radius.
  • Data were collected from Japanese and Japanese-American men and women.
  • Statistical adjustments were made for measurement techniques and body size (height and weight).

Main Results:

  • Men consistently showed higher values than women within each nationality.
  • Japanese-Americans had significantly higher BMC (6-10%) and BMA (16-17%) compared to Japanese individuals.
  • Japanese-Americans exhibited lower BW (-12 to -15%) than Japanese individuals.
  • Adjusting for body size reduced BMC differences by about half but had less impact on BMA and BW differences.

Conclusions:

  • Environmental factors may play a role in bone mass comparable to racial effects.
  • Significant differences in bone parameters exist between Japanese and Japanese-Americans.
  • Further research is needed to clarify methodological issues and confirm findings.